1974 (Champion: Bill Brack)
1. Westwood (CDN), May 26-Alan Lader (USA)-Alan Lader Chevron B27-Ford
2. Edmonton (CDN), Jun 2-Bill Brack (CDN)-Brack Racing Lotus 69-Ford
3. Gimli (CDN), Jun 16-Tom Klausler (USA)-Carl Haas Lola T360-Ford
4. Mosport (CDN), Jul 2-Bill Brack (CDN)-Brack Racing Lotus 69-Ford
5. Sanair (CDN), Jul 14-Bill Brack (CDN)-Brack Racing Lotus 69-Ford
6. St John’s (CDN), Jul 27-Tom Klausler (USA)-Carl Haas Lola T360-Ford
7. Shubenacadie (CDN), Aug 18-Bill Brack (CDN)-Brack Racing Lotus 69-Ford

1975 (Champion: Bill Brack)
1. Edmonton (CDN), May 25-Bertil Roos (S)-Ecurie Canada March 75B-Ford
2. Westwood (CDN), Jun 1-Bertil Roos (S)-Ecurie Canada March 75B-Ford
3. Gimli (CDN), Jun 22-Gilles Villeneuve (CDN)-Villeneuve Racing March 75B-Ford
4. Mont-Tremblant (CDN), Jul 6-Elliott Forbes-Robinson (USA)-Scott Racing Lola T360-Ford
5. Mosport (CDN), Jul 20-Elliott Forbes-Robinson (USA)-Scott Racing Lola T360-Ford
6. Shubenacadie (CDN), Aug 7-Bill Brack (CDN)-Brack Racing Chevron B29-Ford

1976 (IMSA Champion: Gilles Villeneuve)
1. Road Atlanta (USA), Apr 11-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
2. Laguna Seca (USA), May 2-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
3. Ontario (CDN), May 9-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
4. Mid-Ohio (USA), Aug 29-Tom Klausler (USA)-Tom Klausler Lola T460-Ford
5. Road Atlanta (USA), Sep 19-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
6. Laguna Seca (USA), Oct 3-Price Cobb (USA)-Shierson Racing March 76B-Ford

1976 (CASC Champion: Gilles Villeneuve)
1. Edmonton (CDN), May 16-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
2. Westwood (CDN), May 30-Marty Loft (USA)-Shierson Racing March 76B-Ford
3. Gimli (CDN), Jun 13-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
4. Mont-Tremblant (CDN), Jul 11-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
5. Shubenacadie (CDN), Aug 8-Gilles Villeneuve (CDN)-Ecurie Canada March 76B-Ford
6. Mosport (CDN), Aug 22-Bobby Rahal (USA)-Shierson Racing March 76B-Ford

1977 (Champion: Gilles Villeneuve)
1. Mosport (CDN), May 22-Price Cobb (USA)-Hansen Racing March 76B-Ford
2. Gimli (CDN), Jun 26-Bobby Rahal (USA)-Morgan Racing March 76B-Ford
3. Edmonton (CDN), Jul 3-Gilles Villeneuve (CDN)-Ecurie Canada March 77B-Ford
4. Westwood (CDN), Jul 17-Keke Rosberg (FIN)-Opert Racing Chevron B39-Ford
5. Shubenacadie (CDN), Aug 7-Bill Brack (CDN)-Shierson Racing March 77B-Ford
6. St Felicien (CDN), Aug 14-Gilles Villeneuve (CDN)-Ecurie Canada March 77B-Ford
7. Quebec (CDN), Sep 25-Gilles Villeneuve (CDN)-Ecurie Canada March 77B-Ford

1978 (Champion: Howdy Holmes)
1. Long Beach (USA), Apr 6-Howdy Holmes (USA)-Shierson Racing March 78B-Ford
2. Westwood (CDN), Apr 23-Keke Rosberg (FIN)-Opert Racing Chevron B39-Ford
3. Quebec (CDN), Jun 11-Keke Rosberg (FIN)-Opert Racing Chevron B45-Ford
4. Lime Rock (USA), Jul 4-Bobby Rahal (USA)-Pierre’s Motors Racing Ralt RT1-Ford
5. Road America (USA), Jul 23-Howdy Holmes (USA)-Shierson Racing March 78B-Ford
6. Hamilton (CDN), Aug 7-Keke Rosberg (FIN)-Opert Racing Chevron B45-Ford
7. Montreal (CDN), Sep 24-Jeff Wood (USA)-Great Plains Racing March 78B-Ford

1979 (Champion: Tom Gloy)
1. Long Beach (USA), Apr 7-Tom Gloy (USA)-Lane Sports Ralt RT1-Ford
2. Mexico City (MEX), Apr 22-Howdy Holmes (USA)-Shierson Racing March 79B-Ford
3. Westwood (CDN), Jun 3-Kevin Cogan (USA)-Ralt America Ralt RT1-Ford
4. Quebec (CDN), Jun 10-Kevin Cogan (USA)-Ralt America Ralt RT1-Ford
5. Shubenacadie (CDN), Jul 1-Jeff Wood (USA)-Jeff Wood Racing March 79B-Ford
6. Road America (USA), Jul 22-Bob Earl (USA)-NTS Racing Ralt RT1-Ford
7. Mosport (CDN), Aug 8-Kevin Cogan (USA)-Ralt America Ralt RT1-Ford
8. Trois-Rivieres (CDN), Sep 2-Howdy Holmes (USA)-Shierson Racing March 79B-Ford
9. Bridgehampton (USA), Sep 16-Jeff Wood (USA)-Jeff Wood Racing March 79B-Ford
10. Montreal (CDN), Sep 29-Howdy Holmes (USA)-Shierson Racing March 79B-Ford

1980 (Champion: Jacques Villeneuve)
1. Long Beach (USA), Mar 29-Tom Gloy (USA)-Lane Sports Ralt RT1-Ford
2. Sears Point (USA), May 25-Tom Gloy (USA)-Lane Sports Ralt RT1-Ford
3. Westwood (CDN), Jun 1-Jacques Villeneuve Sr (CDN)-Shierson Racing March 80A-Ford
4. Brainerd (USA), Jun 15-Steve Saleen (USA)-Gas Saleen Racing Ralt RT1-Ford
5. Lime Rock (USA), Jul 5-Jacques Villeneuve Sr (CDN)-Shierson Racing March 80A-Ford
6. Road America (USA), Jul 19-Bob Earl (USA)-NTS Racing Ralt RT1-Ford
7. Trois-Rivieres (CDN), Aug 24-Price Cobb (USA)-Dan Marvin Racing March 80A-Ford
8. Bridgehampton (USA), Sep 14-Jeff Wood (USA)-Great Plains Ralt RT4-Ford
9. Montreal (CDN), Sep 27-Jacques Villeneuve Sr (CDN)-Shierson Racing March 80A-Ford
10. Mexico City (MEX), Oct 26-Jacques Villeneuve Sr (CDN)-Shierson Racing March 80A-Ford

1981 (Champion: Jacques Villeneuve)
1. Long Beach (USA), Mar 14-Geoff Brabham (AUS)-Ralt America Ralt RT4-Ford
2. Mexico City (MEX), Apr 5-Jacques Villeneuve Sr (CDN)-Shierson Racing March 81A-Ford
3. Mosport (CDN), Jun 14-Jacques Villeneuve Sr (CDN)-Shierson Racing March 81A-Ford
4. Mid-Ohio (USA), Jun 28-Jacques Villeneuve Sr (CDN)-Shierson Racing March 81A-Ford
5. Road America (USA), Jul 26-Whitney Ganz (USA)-Karges Sport Ralt RT4-Ford
6. Edmonton (CDN), Aug 16-Tim Coconis (USA)-Graphics International Ralt RT4-Ford
7. Westwood (CDN), Aug 23-Rogelio Rodriguez (MEX)-Lane Sports Ralt RT4-Ford
8. Trois-Rivieres (CDN), Sep 6-Jacques Villeneuve Sr (CDN)-Shierson Racing March 81A-Ford
9. Montreal (CDN), Sep 26-Kevin Cogan (USA)-Ralt America Ralt RT4-Ford

1982 (Champion: Dave McMillan)
1. Long Beach (USA), Apr 3-Geoff Brabham (AUS)-Ralt America Ralt RT4-Ford
2. Mexico City (MEX), Apr 25-Rogelio Rodriguez (MEX)-Lane Sports Ralt RT4-Ford
3. Mosport (CDN), Jun 6-Whitney Ganz (USA)-Rainbow Racing Ralt RT4-Ford
4. Montreal (CDN), Jun 12-Tim Coconis (USA)-Tim Coconis Ralt RT4-Ford
5. Mid-Ohio (USA), Jun 27-Dave McMillan (NZ)-Dave McMillan Ralt RT4-Ford
6. Road America (USA), Jul 25-John David Briggs (USA)-Briggs Racing Ralt RT4-Ford
7. Westwood (CDN), Aug 22-Tom Phillips (USA)-Pierre Phillips Ralt RT4-Ford
8. Trois-Rivieres (CDN), Sep 5-Roberto Moreno (BR)-Ralt America Ralt RT4-Ford
9. Mosport (CDN), Sep 12-Whitney Ganz (USA)-Rainbow Racing Ralt RT4-Ford

1983 (Champion: Michael Andretti)
1. Willow Springs (USA), Apr 17-Roberto Moreno (BR)-Theodore Racing Ralt RT4-Ford
2. Riverside (USA), Apr 23-Mark Moore (USA)-Stuart Moore Racing Ralt RT4-Ford
3. Sears Point (USA), May 8-Michael Andretti (USA)-Conte Racing Ralt RT4-Ford
4. Westwood (CDN), May 22-Michael Andretti (USA)-Conte Racing Ralt RT4-Ford
5. Detroit (USA), Jun 4-Josele Garza (MEX)-McCall Racing Ralt RT4-Ford
6. Montreal (CDN), Jun 11-Roberto Moreno (BR)-Theodore Racing Ralt RT4-Ford
7. Road America (USA), Jul 16-Roberto Moreno (BR)-Theodore Racing Ralt RT4-Ford
8. Trois-Rivieres (CDN), Sep 4-Michael Andretti (USA)-Conte Racing Ralt RT4-Ford
9. Mosport (CDN), Sep 11-Roberto Moreno (BR)-Theodore Racing Ralt RT4-Ford

1984 (Champion: Dan Marvin)
1. Willow Springs (USA), Apr 8-Hubert Phipps (USA)-Fortner Lucini Ralt RT4-Ford
2. Sears Point (USA), Jun 3-Dan Marvin (USA)-Jon Norman Racing Ralt RT4-Ford
3. Portland (USA), Jun 9-Dan Marvin (USA)-Jon Norman Racing Ralt RT4-Ford
4. Laguna Seca (USA), Jun 24-John David Briggs (USA)-Briggs Racing Ralt RT4-Ford
5. Seattle (USA), Jul 8-Dan Marvin (USA)-Jon Norman Racing Ralt RT4-Ford
6. Westwood (CDN), Jul 22-Chris Bender (USA)-Chris Bender Ralt RT4-Ford
7. Seattle (USA), Sep 23-Dan Marvin (USA)-Jon Norman Racing Ralt RT4-Ford
8. Sears Point (USA), Sep 30-Dan Marvin (USA)-Jon Norman Racing Ralt RT4-Ford
9. Riverside (USA), Oct 7-Davy Jones (USA)-Garvin Brown Ralt RT4-Ford

1985 (Atlantic Champion: Michael Angus)
1. Summit Point (USA), Jul 7-Steve Shelton (USA)-Steve Shelton Ralt RT4/82-Ford
2. Brainerd (USA), Jul 21-Michael Angus (USA)-Stuart Moore Racing Ralt RT4/83-Ford
3. Lime Rock (USA), Aug 10-Michael Greenfield (USA)-Greenfield Industries Ralt RT4/85-Ford
4. Trois-Rivieres (CDN), Sep 1-Dan Marvin (USA)-Jon Norman Racing Ralt RT4/83-Ford
5. St Louis (USA), Oct 13-Michael Angus (USA)-Stuart Moore Racing Ralt RT4/83-Ford
6. St Petersburg (USA), Nov 3-Riley Hopkins (USA)-Riley Hopkins Ralt RT4/83-Ford

1985 (Pacific Champion: Jeff Wood)
1. Riverside (USA), Mar 31-Dan Marvin (USA)-Jon Norman Racing Ralt RT4/83-Ford
2. Firebird (USA), Apr 21-Jeff Wood (USA)-McNeill Motor Cars Ralt RT4/84-Ford
3. Willow Springs (USA), May 12-Hubert Phipps (USA)-MDB Systems Ralt RT4/83-Ford
4. Sears Point (USA), Jun 2-Jeff Wood (USA)-McNeill Motor Cars Ralt RT4/84-Ford
5. Laguna Seca (USA), Jun 16-John David Briggs (USA)-Briggs Racing Ralt RT4/83-Ford
6. Westwood (CDN), Jul 21-Dan Marvin (USA)-Jon Norman Racing Ralt RT4/83-Ford
7. Portland (USA), Sep 8-Jeff Wood (USA)-McNeill Motor Cars Ralt RT4/84-Ford
8. Seattle (USA), Sep 16-Dan Marvin (USA)-Jon Norman Racing Ralt RT4/83-Ford
9. Sears Point (USA), Sep 29-Jeff Wood (USA)-McNeill Motor Cars Ralt RT4/84-Ford

1986 (Atlantic Champion: Scott Goodyear)
1. Road Atlanta (USA), Jun 1-Scott Goodyear (CDN)-Tom Mitchell Ralt RT4/86-Ford
2. Montreal (CDN), Jun 14-Scott Goodyear (CDN)-Tom Mitchell Ralt RT4/86-Ford
3. Summit Point (USA), Jul 4-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/86-Ford
4. Road America (USA), Jul 26-Scott Goodyear (CDN)-Tom Mitchell Ralt RT4/86-Ford
5. St Louis (USA), Aug 3-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/86-Ford
6. Lime Rock (USA), Aug 16-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/86-Ford
7. Mid-Ohio (USA), Sep 27-Scott Goodyear (CDN)-Tom Mitchell Ralt RT4/86-Ford
8. Road Atlanta (USA), Oct 12-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/86-Ford
9. St Petersburg (USA), Nov 15-Scott Goodyear (CDN)-Tom Mitchell Ralt RT4/86-Ford

1986 (Pacific Champion: Ted Prappas)
1. Firebird (USA), Mar 23-Dan Marvin (USA)-Jon Norman Racing Ralt RT4/83-Ford
2. Laguna Seca (USA), May 4-Ted Prappas (USA)-Team Tui Ralt RT4/86-Ford
3. Riverside (USA), May 18-Roberto Quintanilla (MEX)-Rick Shea Racing Ralt RT4/85-Ford
4. Sears Point (USA), Jun 1-Rod Bennett (USA)-Rod Bennett Ralt RT4/82-Ford
5. Laguna Seca (USA), Jun 16-Tom Phillips (USA)-Pierre Phillips Ralt RT4/83-Ford
6. Westwood (CDN), Jul 6-Ted Prappas (USA)-Team Tui Ralt RT4/86-Ford
7. Tacoma (USA), Aug 10-Tom Phillips (USA)-Pierre Phillips Ralt RT4/83-Ford
8. Portland (USA), Aug 24-Ted Prappas (USA)-Team Tui Ralt RT4/86-Ford
9. Sears Point (USA), Sep 28-Roberto Quintanilla (MEX)-Rick Shea Racing Ralt RT4/85-Ford

1987 (Atlantic Champion: Calvin Fish)
1. Road Atlanta (USA), Apr 12-Michael Greenfield (USA)-Greenfield Industries Ralt RT487-Ford
2. Mosport (CDN), Jun 7-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/87-Ford
3. Watkins Glen (USA), Jul 5-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/87-Ford
4. Brainerd (USA), Jul 19-Steve Shelton (USA)-Stuart Moore Racing Ralt RT4/86-Ford
5. Lime Rock (USA), Aug 1-Michael Greenfield (USA)-Greenfield Industries Ralt RT487-Ford
6. Road America (USA), Aug 29-Ted Prappas (USA)-Team Tui Ralt RT4/86-Ford
7. Mid-Ohio (USA), Sep 6-Calvin Fish (GB)-Dennis Eade Competition Ralt RT4/87-Ford
8. Road Atlanta (USA), Oct 11-RK Smith (USA)-P1 Racing Swift DB4-Ford
*9. Memphis (USA), Oct 31-RK Smith (USA)-P1 Racing Swift DB4-Ford
10. St Petersburg (USA), Nov 7-Johnny O’Connell (USA)-McNeil Motorsports Ralt RT4/86-Ford
*Also a Pacific championship round

1987 (Pacific Champion: Johnny O’Connell)
1. Laguna Seca (USA), May 3-Johnny O’Connell (USA)-McNeil Motorsports Ralt RT4/86-Ford
2. Firebird (USA), May 17-Dean Hall (USA)-Cava-Fortner Mts Ralt RT4/86-Ford
3. Sears Point (USA), May 31-Dean Hall (USA)-Cava-Fortner Mts Ralt RT4/86-Ford
4. Portland (USA), Jun 13-Dean Hall (USA)-Cava-Fortner Mts Ralt RT4/86-Ford
5. Spokane (USA), Jul 5-Johnny O’Connell (USA)-McNeil Motorsports Ralt RT4/86-Ford
6. Sears Point (USA), Aug 2-Dean Hall (USA)-Cava-Fortner Mts Ralt RT4/86-Ford
7. Tacoma (USA), Aug 9-Johnny O’Connell (USA)-McNeil Motorsports Ralt RT4/86-Ford
8. Westwood (CDN), Aug 23-Johnny O’Connell (USA)-McNeil Motorsports Ralt RT4/86-Ford
9. Portland (USA), Sep 13-RK Smith (USA)-P1 Racing Swift DB4-Ford
10. Laguna Seca (USA), Oct 10-Jimmy Vasser (USA)-P1 Racing Swift DB4-Ford
*11. Memphis (USA), Oct 10-RK Smith (USA)-P1 Racing Swift DB4-Ford
*Also an Atlantic championship round

1988 (Atlantic Champion: Steve Shelton)
1. Road Atlanta (USA), Apr 10-Steve Shelton (USA)-Stuart Moore Racing Swift DB4-Ford
2. Milwaukee (USA), May 15-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Ford
3. Montreal (CDN), Jun 11-Scott Harrington (USA)-H-Promotions Team Ralt RT4/88-Ford
4. Mosport (CDN), Jun 19-Colin Trueman (USA)-Truesports Swift DB4-Ford
5. Road America (USA), Jul 17-Colin Trueman (USA)-Truesports Swift DB4-Toyota
6. Lime Rock (USA), Aug 6-Freddy Rhemrev (USA)-Rhemrev Racing Swift DB4-Ford
7. Mid-Ohio (USA), Sep 4-Steve Shelton (USA)-Stuart Moore Racing Swift DB4-Ford
8. Mid-Ohio (USA), Sep 24-Steve Shelton (USA)-Stuart Moore Racing Swift DB4-Ford
9. St Petersburg (USA), Oct 22-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Ford
10. Sebring (USA), Oct 30-Scott Harrington (USA)-H-Promotions Team Ralt RT4/88-Ford

1988 (Pacific Champion: Dean Hall)
1. Firebird (USA), Apr 17-Dean Hall (USA)-Cava-Fortner Mts Swift DB4-Ford
2. Riverside (USA), May 15-Dean Hall (USA)-Cava-Fortner Mts Swift DB4-Ford
3. Sears Point (USA), May 29-Dean Hall (USA)-Cava-Fortner Mts Swift DB4-Ford
4. Spokane (USA), Jul 3-Johnny O’Connell (USA)-Riley Hopkins Ralt RT4/83-Ford
5. Westwood (CDN), Race 1 (Aug 6)-Dean Hall (USA)-Cava-Fortner Mts Swift DB4-Ford
6. Westwood (CDN), Race 2 (Aug 7)-Rod Granberry (USA)-Concept Motorsports Swift DB4-Ford
7. Sears Point (USA), Aug 14-Dean Hall (USA)-Cava-Fortner Mts Swift DB4-Ford
8. Portland (USA), Aug 28-Mitch Thieman (USA)-Phillips Mts Swift DB4-Ford
9. Westwood (CDN), Sep 11-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Ford
10. Laguna Seca (USA), Oct 15-Mitch Thieman (USA)-Phillips Mts Swift DB4-Ford

1989 (Atlantic Champion: Jocko Cunningham)
1. Long Beach (USA), Apr 16-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Toyota
2. Lime Rock (USA), May 27-Claude Bourbonnais (CDN)-John Hayes Swift DB4-Toyota
3. Mid-Ohio (USA), Jun 4-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Toyota
4. Montreal (CDN), Jun 17-Scott Goodyear (CDN)-Chris Clark Racing Swift DB4-Toyota
5. Mosport (CDN), Jun 25-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Toyota
6. Watkins Glen (USA), Jul 1- Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Toyota
7. Mid-Ohio (USA), Jul 16-Colin Trueman (USA)-Truesports Swift DB4-Toyota
8. Heartland Park (USA), Aug 13-Colin Trueman (USA)-Truesports Swift DB4-Toyota
9. Trois-Rivieres (CDN), Aug 27-Jacques Villeneuve Sr (CDN)-Chris Clark Racing Swift DB4-Toyota
10. Road America (USA), Sep 10-Claude Bourbonnais (CDN)-John Hayes Swift DB4-Toyota
*11. Heartland Park (USA), Oct 15-Claude Bourbonnais (CDN)-John Hayes Swift DB4-Toyota
12. St Petersburg (USA), Oct 29-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Toyota
*Also a Pacific championship round

1989 (Pacific Champion: Hiro Matsushita)
*1. Long Beach (USA), Apr 16-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Toyota
2. Willow Springs (USA), Apr 30-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
3. Sears Point (USA), May 7-RK Smith (USA)-Dwayne Anderson Racing Swift DB4-Toyota
4. Westwood (CDN), May 28-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Toyota
5. Phoenix (USA), Jun 3-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
6. Westwood (CDN), Aug 6-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Toyota
7. Seattle (USA), Race 1 (Aug 19)-Hiro Matsushita (J)-Dwayne Anderson Racing Swift DB4-Toyota
8. Seattle (USA), Race 2 (Aug 20)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
9. Calgary (CDN), Sep 3-David Diem (USA)-DMR Swift DB4-Toyota
10. Sears Point (USA), Sep 10-Joe Sposato (USA)-Sposato Racing Swift DB4-Toyota
*11. Heartland Park (USA), Oct 15-Claude Bourbonnais (CDN)-John Hayes Swift DB4-Toyota
*Also an Atlantic championship round

1990 (Atlantic Champion: Brian Till)
*1. Long Beach (USA), Apr 21-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
2. Heartland Park (USA), May 5-Claude Bourbonnais (CDN)-ComPrep Reynard 90H-Toyota
3. Lime Rock (USA), May 28-Claude Bourbonnais (CDN)-ComPrep Reynard 90H-Toyota
4. Montreal (CDN), Jun 9-Jocko Cunningham (USA)-Cunningham Motorsports Swift DB4-Toyota
5. Watkins Glen (USA), Jul 1-Brian Till (USA)-Cole Performance Swift DB4-Toyota
6. Toronto (CDN), Jul 21-Freddy Rhemrev (USA)-ComPrep Reynard 90H-Toyota
7. Trois-Rivieres (CDN), Aug 19-Brian Till (USA)-Cole Performance Swift DB4-Toyota
*8. Road America (USA), Sep 23-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
9. St Petersburg (USA), Nov 4-Brian Till (USA)-Cole Performance Swift DB4-Toyota
*Also a Pacific championship round

1990 (Pacific Champion: Mark Dismore)
*1. Long Beach (USA), Apr 21-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
2. Sears Point (USA), May 6-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
3. Calgary (CDN), Race 1 (Jun 2)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
4. Calgary (CDN), Race 2 (Jun 2)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
5. Laguna Seca (USA), Jul 1-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
6. Westwood (USA), Aug 5-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
7. Vancouver (CDN), Sep 1-Claude Bourbonnais (CDN)-ComPrep Reynard 90H-Toyota
*8. Road America (USA), Sep 23-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
9. Laguna Seca (USA), Race 1 (Oct 20)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
10. Laguna Seca (USA), Race 2 (Oct 21)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
*Also an Atlantic championship round

1991 (Champion: Jovy Marcelo)
1. Long Beach (USA), Apr 14-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
2. Phoenix (USA), Apr 20-John Tanner (USA)-Cameron-McGee Swift DB4-Toyota
3. Lime Rock (USA), May 27-Jovy Marcelo (RP)-P1 Racing Swift DB4-Toyota
4. Montreal (CDN), Jun 2-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
5. Watkins Glen (USA), Jun 29-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
6. Des Moines (USA), Jul 14-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
7. Toronto (CDN), Jul 21-Stuart Crow (USA)-BDJS Swift DB4-Toyota
8. Trois-Rivieres (CDN), Aug 18-Jacques Villeneuve (CDN)-Pierre Phillips Swift DB4-Toyota
9. Vancouver (CDN), Sep 1-Stephane Proulx (CDN)-High Bridge Racing Swift DB4-Toyota
10. Mid-Ohio (USA), Sep 14-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota
11. Nazareth (USA), Oct 6-Jovy Marcelo (RP)-P1 Racing Swift DB4-Toyota
12. Laguna Seca (USA), Race 1 (Oct 19)-John Tanner (USA)-Cameron-McGee Swift DB4-Toyota
13. Laguna Seca (USA), Race 2 (Oct 20)-Jimmy Vasser (USA)-Genoa Swift DB4-Toyota

1992 (Champion: Chris Smith)
1. Miami (USA), Feb 22-Russell Spence (GB)-3001 International Reynard 92H-Toyota
2. Phoenix (USA), Apr 4-Russell Spence (GB)-3001 International Reynard 92H-Toyota
3. Long Beach (USA), Apr 10-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
4. Lime Rock (USA), May 23-Chris Smith (USA)-Oppliger Swift DB4-Toyota
5. Montreal (CDN), Jun 13-Chris Smith (USA)-Oppliger Swift DB4-Toyota
6. Watkins Glen (USA), Jun 27-Russell Spence (GB)-3001 International Reynard 92H-Toyota
7. Toronto (CDN), Jul 18-David Empringham (CDN)-Canaska Racing Swift DB4-Toyota
8. Trois-Rivieres (CDN), Aug 16-Chris Smith (USA)-Oppliger Swift DB4-Toyota
9. Vancouver (CDN), Aug 29-Patrick Carpentier (CDN)-Pierre Phillips Swift DB4-Toyota
10. Mid-Ohio (USA), Sep 14-Stuart Crow (USA)-BDJS Ralt RT40-Toyota
11. Mosport (CDN), Sep 20-David Empringham (CDN)-Canaska Racing Swift DB4-Toyota
12. Nazareth (USA), Oct 3-Harald Huysman (N)-3001 International Reynard 92H-Toyota
13. Laguna Seca (USA), Race 1 (Oct 17)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
14. Laguna Seca (USA), Race 2 (Oct 18)-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota

1993 (Champion: David Empringham)
1. Phoenix (USA), Apr 3-Stuart Crow (USA)-BDJS Ralt RT40-Toyota
2. Long Beach (USA), Apr 17-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
3. Road Atlanta (USA), May 9-Jacques Villeneuve (CDN)-Forsythe Green Racing Ralt RT40-Toyota
4. Milwaukee (USA), Jun 5-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
5. Montreal (CDN), Jun 12-Jacques Villeneuve (CDN)-Forsythe Green Racing Ralt RT40-Toyota
6. Mosport (CDN), Jun 20-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
7. Halifax (CDN), Jul 11-Trevor Seibert (CDN)-P1 Racing Swift DB4-Toyota
8. Toronto (CDN), Jul 17-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
9. New Hampshire (USA), Aug 8-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
10. Trois-Rivieres (CDN), Aug 15-David Empringham (USA)-Canaska Ralt RT40-Toyota
11. Vancouver (CDN), Aug 28-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
12. Mid-Ohio (USA), Sep 11-Jacques Villeneuve (CDN)-Forsythe Green Racing Ralt RT40-Toyota
13. Nazareth (USA), Sep 18-Claude Bourbonnais (CDN)-Forsythe Green Racing Ralt RT40-Toyota
14. Laguna Seca (USA), Race 1 (Oct 2)-Jacques Villeneuve (CDN)-Forsythe Green Racing Ralt RT40-Toyota
15. Laguna Seca (USA), Race 2 (Oct 3)-Jacques Villeneuve (CDN)-Forsythe Green Racing Ralt RT40-Toyota

1994 (Champion: David Empringham)
1. Phoenix (USA), Apr 9-Greg Ray (USA)-Genoa Ralt RT41-Toyota
2. Long Beach (USA), Apr 15-Richie Hearn (USA)-Lynx Racing Ralt RT40-Toyota
3. Mosport (CDN), Apr 22-Greg Ray (USA)-Genoa Ralt RT41-Toyota
4. Milwaukee (USA), Jun 4-Greg Ray (USA)-Genoa Ralt RT41-Toyota
5. Montreal (CDN), Jun 11-Richie Hearn (USA)-Lynx Racing Ralt RT41-Toyota
6. Toronto (CDN), Jul 16-Richie Hearn (USA)-Lynx Racing Ralt RT41-Toyota
7. Trois-Rivieres (CDN), Aug 7-David Empringham (CDN)-Forsythe-Green Ralt RT41-Toyota
8. Mid-Ohio (USA), Aug 13-Colin Trueman (USA)-Truesports Ralt RT41-Toyota
9. Vancouver (CDN), Sep 3-David Empringham (CDN)-Forsythe-Green Ralt RT41-Toyota
10. Nazareth (USA), Sep 17-Mark Dismore (USA)-P1 Racing Swift DB4-Toyota
11. Laguna Seca (USA), Oct 8-Richie Hearn (USA)-Lynx Racing Ralt RT41-Toyota

1995 (Champion: Richie Hearn)
1. Homestead (USA), Mar 4-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
2. Phoenix (USA), Apr 2-David Empringham (CDN)-BDJS Ralt RT41-Toyota
3. Long Beach (USA), Apr 9-David Empringham (CDN)-BDJS Ralt RT41-Toyota
4. Nazareth (USA), Apr 22-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
5. Milwaukee (USA), Jun 3-David Empringham (CDN)-BDJS Ralt RT41-Toyota
6. Montreal (CDN), Jun 12-David Empringham (CDN)-BDJS Ralt RT41-Toyota
7. Toronto (CDN), Jul 15-Richie Hearn (USA)-Della Penna Ralt RT41-Toyota
8. Trois-Rivieres (CDN), Race 1 (Aug 6)-David Empringham (CDN)-BDJS Ralt RT41-Toyota
9. Trois-Rivieres (CDN), Race 2 (Aug 6)-Richie Hearn (USA)-Della Penna Ralt RT41-Toyota
10. Mid-Ohio (USA), Aug 13-Richie Hearn (USA)-Della Penna Ralt RT41-Toyota
11. Vancouver (CDN), Sep 2-David Empringham (CDN)-BDJS Ralt RT41-Toyota
12. Laguna Seca (USA), Sep 9-Case Montgomery (USA)-Sandy Dells Racing Ralt RT40-Toyota

1996 (Champion: Patrick Carpentier)
1. Homestead (USA), Mar 3-Tony Ave (USA)-Olsson Engineering Ralt RT41-Toyota
2. Long Beach (USA), Apr 12-Case Montgomery (USA)-Sandy Dells Racing Ralt RT41-Toyota
3. Nazareth (USA), Apr 27-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
4. Milwaukee (USA), Jun 2-Anthony Lazzaro (USA)-BG Performance Motorsport Ralt RT40-Toyota
5. Montreal (CDN), Jun 15-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
6. Toronto (CDN), Jul 13-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
7. Trois-Rivieres (CDN), Race 1 (Aug 3)-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
8. Trois-Rivieres (CDN), Race 2 (Aug 4)-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
9. Mid-Ohio (USA), Aug 10-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
10. Road America (USA), Aug 18-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
11. Vancouver (CDN), Aug 31-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota
12. Laguna Seca (USA), Sep 7-Patrick Carpentier (CDN)-Lynx Racing Ralt RT41-Toyota

1997 (Champion: Alex Barron)
1. Homestead (USA), Mar 1-Anthony Lazzaro (USA)-Phillips Motorsport Ralt RT40-Toyota
2. Long Beach (USA), Apr 2-Alex Tagliani (CDN)-Forsythe Racing Ralt RT40-Toyota
3. Nazareth (USA), Apr 26-Alex Barron (USA)-Lynx Racing Ralt RT41-Toyota
4. Milwaukee (USA), May 31-Alex Barron (USA)-Lynx Racing Ralt RT41-Toyota
5. Montreal (CDN), Jun 14-Bertrand Godin (CDN)-Forsythe Racing Ralt RT40-Toyota
6. Cleveland (USA), Jul 13-Bertrand Godin (CDN)-Forsythe Racing Ralt RT40-Toyota
7. Toronto (CDN), Jul 19-Memo Gidley (USA)-Lynx Racing Ralt RT41-Toyota
8. Trois-Rivieres (CDN), Aug 3-Alex Tagliani (CDN)-Forsythe Racing Ralt RT40-Toyota
9. Mid-Ohio (USA), Aug 10-Alex Barron (USA)-Lynx Racing Ralt RT41-Toyota
10. Road America (USA), Aug 17-Alex Barron (USA)-Lynx Racing Ralt RT41-Toyota
11. Vancouver (CDN), Sep 1-Memo Gidley (USA)-Lynx Racing Ralt RT41-Toyota
12. Laguna Seca (USA), Sep 6-Alex Barron (USA)-Lynx Racing Ralt RT41-Toyota

1998 (Champion: Lee Bentham)
1. Long Beach (USA), Apr 4-Memo Gidley (USA)-Lynx Racing Ralt RT41-Toyota
2. Nazareth (USA), Apr 25-Buddy Rice (USA)-Lynx Racing Ralt RT41-Toyota
3. Gateway (USA), May 22-Memo Gidley (USA)-Lynx Racing Ralt RT41-Toyota
4. Milwaukee (USA), May 30-Memo Gidley (USA)-Lynx Racing Ralt RT41-Toyota
5. Montreal (CDN), Jun 6-Lee Bentham (CDN)-Forsythe Racing Swift 008.a-Toyota
6. Cleveland (USA), Jul 11-Kenny Wilden (CDN)-Shank Racing Swift 008.a-Toyota
7. Toronto (CDN), Jul 18-Alex Tagliani (CDN)-Forsythe Racing Swift 008.a-Toyota
8. Trois-Rivieres (CDN), Aug 2-Alex Tagliani (CDN)-Forsythe Racing Swift 008.a-Toyota
9. Mid-Ohio (USA), Aug 9-Lee Bentham (CDN)-Forsythe Racing Swift 008a-Toyota
10. Road America (USA), Aug 16-Anthony Lazzaro (USA)-PPI Motorsports Swift 008.a-Toyota
11. Vancouver (CDN), Sep 5-Andrew Bordin (CDN)-BDJS Swift 008.a-Toyota
12. Laguna Seca (USA), Sep 12-Anthony Lazzaro (USA)-PPI Motorsports Swift 008.a-Toyota
13. Houston (USA), Oct 4-Anthony Lazzaro (USA)-PPI Motorsports Swift 008.a-Toyota

1999 (Champion: Anthony Lazzaro) – All cars Swift-Toyota
1. Long Beach (USA), Apr 17-Alex Tagliani (CDN)-Forsythe Racing
2. Nazareth (USA), May 1-Anthony Lazzaro (USA)-PPI Motorsports
3. Gateway (USA), May 29-Anthony Lazzaro (USA)-PPI Motorsports
4. Milwaukee (USA), Jun 5-Lee Bentham (CDN)-Forsythe Racing
5. Montreal (CDN), Jun 12-Alex Tagliani (CDN)-Forsythe Racing
6. Road America (USA), Jul 11-Andrew Bordin (CDN)-PPI Motorsports
7. Trois-Rivieres (CDN), Aug 1-Anthony Lazzaro (USA)-PPI Motorsports
8. Mid-Ohio (USA), Aug 8-Kenny Wilden (CDN)-Shank Racing
9. Chicago (USA), Aug 21-Sam Hornish Jr (USA)-Shank Racing
10. Vancouver (CDN), Sep 5-Will Langhorne (USA)-Active Motorsports
11. Laguna Seca (USA), Sep 11-Anthony Lazzaro (USA)-PPI Motorsports
12. Houston (USA), Sep 26-Andrew Bordin (CDN)-PPI Motorsports

2000 (Champion: Buddy Rice)
1. Homestead, Race 1 (Mar 25)-Dan Wheldon (GB)-PPI Motorsports
2. Homestead, Race 2 (Mar 26)-Buddy Rice (USA)-DSTP Motorsports
3. Long Beach (USA), Apr 15-Buddy Rice (USA)-DSTP Motorsports
4. Milwaukee (USA), Jun 3-Martin Basso (RA)-Shank Racing
5. Montreal (CDN), Jun 16-David Rutledge (CDN)-Lynx Racing
6. Cleveland (USA), Jul 2-Buddy Rice (USA)-DSTP Motorsports
7. Toronto (CDN), Jul 16-Andrew Bordin (CDN)-PPI Motorsports
8. Trois-Rivieres (CDN), Jul 30-Buddy Rice (USA)-DSTP Motorsports
9. Road America (USA), Aug 20-Buddy Rice (USA)-DSTP Motorsports
10. Laguna Seca (USA), Sep 9-Dan Wheldon (GB)-PPI Motorsports
11. Gateway (USA), Sep 16-Case Montgomery (USA)-World Speed Motorsports
12. Houston (USA), Oct 1-Andrew Bordin (CDN)-PPI Motorsports

2001 (Champion: Hoover Orsi)
1. Long Beach (USA), Apr 8-David Rutledge (CDN)-Lynx Racing
2. Nazareth (USA), May 6-Tony Ave (USA)-P1 Racing
3. Milwaukee (USA), Jun 3-Hoover Orsi (BR)-Hylton Motorsports
4. Montreal (CDN), Jun 9-David Rutledge (CDN)-Lynx Racing
5. Cleveland (USA), Jul 1-Hoover Orsi (BR)-Hylton Motorsports
6. Toronto (CDN), Jul 15-David Rutledge (CDN)-Lynx Racing
7. Chicago (USA), Jul 29-Hoover Orsi (BR)-Hylton Motorsports
8. Trois-Rivieres (CDN), Aug 5-Hoover Orsi (BR)-Hylton Motorsports
9. Road America (USA), Aug 19-Hoover Orsi (BR)-Hylton Motorsports
10. Vancouver (CDN), Sep 2-Joey Hand (USA)-DSTP Motorsports
11. Houston (USA), Oct 7-Joey Hand (USA)-DSTP Motorsports
12. Laguna Seca (USA), Oct 14-Rocky Moran Jr (USA)-Cobb Racing

2002 (Champion: Jon Fogarty)
1. Monterrey (MEX), Mar 9-Jon Fogarty (USA)-Dorricott Racing
2. Long Beach (USA), Apr 14-Michael Valiante (CDN)-Lynx Racing
3. Milwaukee (USA), Jun 2-Roger Yasukawa (USA)-Hylton Motorsports
4. Laguna Seca (USA), Jun 8-Ryan Hunter-Reay (USA)-Hylton Motorsports
5. Portland (USA), Jun 15-Luis Diaz (MEX)-Dorricott Racing
6. Chicago (USA), Jun 30-Ryan Hunter-Reay (USA)-Hylton Motorsports
7. Toronto (CDN), Jul 6-Michael Valiante (CDN)-Lynx Racing
8. Cleveland (USA), Jul 14-Ryan Hunter-Reay (USA)-Hylton Motorsports
9. Trois-Rivieres (CDN), Aug 4-Michael Valiante (CDN)-Lynx Racing
10. Road America (USA), Aug 18-Luis Diaz (MEX)-Dorricott Racing
11. Montreal (CDN), Aug 24-Rocky Moran Jr (USA)-Sigma Autosport
12. Denver (USA), Aug 31-Jon Fogarty (USA)-Dorricott Racing

2003 (Champion: AJ Allmendinger)
1. Monterrey (MEX), Mar 23-Michael Valiante (CDN)-Lynx Racing
2. Long Beach (USA), Apr 13-AJ Allmendinger (USA)-RuSPORT
3. Milwaukee (USA), May 31-Ryan Dalziel (GB)-Sierra Sierra Racing
4. Laguna Seca (USA), Jun 14-AJ Allmendinger (USA)-RuSPORT
5. Portland (USA), Jun 21-Ryan Dalziel (GB)-Sierra Sierra Racing
6. Cleveland (USA), Jul 5-AJ Allmendinger (USA)-RuSPORT
7. Toronto (CDN), Jul 12-AJ Allmendinger (USA)-RuSPORT
8. Trois-Rivieres (CDN), Aug 3-AJ Allmendinger (USA)-RuSPORT
9. Mid-Ohio (USA), Aug 10-Michael Valiante (CDN)-Lynx Racing
10. Montreal (CDN), Aug 23-AJ Allmendinger (USA)-RuSPORT
11. Denver (USA), Aug 31-AJ Allmendinger (USA)-RuSPORT
12. Miami (USA), Sep 28-Michael Valiante (CDN)-Lynx Racing

2004 (Champion: Jon Fogarty)
1. Long Beach (USA), Apr 13-Ryan Dalziel (GB)-Sierra Sierra Racing
2. Monterrey (MEX), Mar 23-Alex Figge (USA)-Pacific Coast Motorsports
3. Milwaukee (USA), May 31-Jon Fogarty (USA)-Pacific Coast Motorsports
4. Portland (USA), Jun 21-Jon Fogarty (USA)-Pacific Coast Motorsports
5. Portland (USA), Jun 21-Jon Fogarty (USA)-Pacific Coast Motorsports
6. Cleveland (USA), Jul 5-Ryan Dalziel (GB)-Sierra Sierra Racing
7. Toronto (CDN), Jul 12-Jon Fogarty (USA)-Pacific Coast Motorsports
8. Vancouver (CDN), Sep 2-Ryan Dalziel (GB)-Sierra Sierra Racing
9. Road America (USA), Aug 18-Ryan Dalziel (GB)-Sierra Sierra Racing
10. Denver (USA), Aug 31-Ronnie Bremer (DK)-Polestar Racing Group
11. Montreal (CDN), Aug 23-Jon Fogarty (USA)-Pacific Coast Motorsports
12. Laguna Seca (USA), Oct 14-Jon Fogarty (USA)-Pacific Coast Motorsports

2005 (Champion: Charles Zwolsman)
1. Long Beach (USA), Apr 10-Katherine Legge (GB)-Polestar Racing Group
2. Monterrey (MEX), May 22-Charles Zwolsman (NL)-Condor Motorsports
3. Portland (USA), Race 1 (Jun 18)-Tonis Kasemets (EE)-Team Tonis
4. Portland (USA), race 2 (Jun 19)-Tonis Kasemets (EE)-Team Tonis
5. Cleveland (USA), Race 1 (Jun 25)-Charles Zwolsman (NL)-Condor Motorsports
6. Cleveland (USA), Race 2 (Jun 26)-Charles Zwolsman (NL)-Condor Motorsports
7. Toronto (CDN), Jul 10-Antoine Bessette (CDN)-Polestar Racing Group
8. Edmonton (CDN), Jul 17-Katherine Legge (GB)-Polestar Racing Group
9. San Jose (USA), Jul 31-Katherine Legge (GB)-Polestar Racing Group
10. Denver (USA), Aug 14-Andreas Wirth (D)-Brookes Associates Racing
11. Road America (USA), Aug 21-Tonis Kasemets (EE)-Team Tonis
12. Montreal (CDN), Aug 28-Antoine Bessette (CDN)-Polestar Racing Group

2006 (Champion: Simon Pagenaud) – All cars Swift-Mazda
1. Long Beach (USA), Apr 9-Andreas Wirth (D)-Forsythe Championship Racing
2. Houston (USA), May 13-Andreas Wirth (D)-Forsythe Championship Racing
3. Monterrey (MEX), May 21-Graham Rahal (USA)-Mi-Jack Conquest Racing
4. Portland (USA), Jun 18-James Hinchcliffe (CDN)-Forsythe Championship Racing
5. Cleveland (USA), Race 1 (Jun 24)-Graham Rahal (USA)-Mi-Jack Conquest Racing
6. Cleveland (USA), Race 2 (Jun 25)-Graham Rahal (USA)-Mi-Jack Conquest Racing
7. Toronto (CDN), Jul 9-Robbie Pecorari (USA)-Gelles Racing
8. Edmonton (CDN), Jul 23-Simon Pagenaud (F)-Team Australia
9. San Jose (USA), Jul 30-Raphael Matos (BR)-Sierra Sierra Enterprises
10. Denver (USA), Aug 13-Graham Rahal (USA)-Mi-Jack Conquest Racing
11. Montreal (CDN), Aug 28-Graham Rahal (USA)-Mi-Jack Conquest Racing
12. Road America (USA), Sep 24-Jonathan Bomarito (USA)-PR1 Motorsports

2007 (Champion: Raphael Matos)
1. Las Vegas (USA), Apr 8-Raphael Matos (BR)-Sierra Sierra Enterprises
2. Long Beach (USA), Apr 15-Raphael Matos (BR)-Sierra Sierra Enterprises
3. Houston (USA), Apr 22-Raphael Matos (BR)-Sierra Sierra Enterprises
4. Portland (USA), Race 1 (Jun 9)-Robert Wickens (CDN)-Red Bull Team Forsythe
5. Portland (USA), Race 2 (Jun 10)-Kevin LaCroix (CDN)-Brooks Associates Racing
6. Cleveland (USA), Jun 24-Raphael Matos (BR)-Sierra Sierra Enterprises
7. Mont-Tremblant (CDN), Jul 1-Franck Perera (F)-Condor Motorsports
8. Toronto (CDN), Jul 8-Franck Perera (F)-Condor Motorsports
9. Edmonton (CDN), Race 1 (Jul 21)-Raphael Matos (BR)-Sierra Sierra Enterprises
10. Edmonton (CDN), Race 2 (Jul 22)-Raphael Matos (BR)-Sierra Sierra Enterprises
11. San Jose (USA), Jul 29-Jonathan Bomarito (USA)-PR1 Motorsports
12. Road America (USA), Aug 12)-Franck Perera (F)-Condor Motorsports

2008 (Champion: Markus Niemela)
1. Long Beach (USA), Apr 20-Simona de Silvestro (CH)-Newman Wachs Racing
2. Laguna Seca (USA), May 18-James Hinchcliffe (CDN)-Forsythe-Pettit Racing
3. Mont-Tremblant (CDN), Jun 29-Junior Strous (NL)-Condor Motorsports
4. Edmonton (CDN), Race 1 (Jul 25)-Jonathan Bomarito (USA)-Mathiasen Motorsports
5. Edmonton (CDN), Race 2 (Jul 26)-Jonathan Summerton (USA)-Newman Wachs Racing
6. Road America (USA), Race 1 (Aug 10)-Jonathan Bomarito (USA)-Mathiasen Motorsports
7. Road America (USA), Race 2 (Aug 10)-Jonathan Summerton (USA)-Newman Wachs Racing
8. Trois-Rivieres (CDN), Aug 17-Jonathan Bomarito (USA)-Mathiasen Motorsports
9. New Jersey (USA), Sep 14-Carl Skerlong (USA)-Pacific Coast Motorsports
10. Salt Lake City (USA), Sep 21-Markus Niemela (FIN)-Brooks Associates Racing
11. Road Atlanta (USA), Oct 3-Markus Niemela (FIN)-Brooks Associates Racing

2009 (Champion: John Michael Edwards)
1. Sebring (USA), Mar 20-John Michael Edwards (USA)-Newman-Wachs Racing
2. Salt Lake (USA), May 17-Simona de Silvestro (CH)-Team Stargate Worlds
3. New Jersey (USA), Race 1 (Jun 13)-Jonathan Summerton (USA)-Genoa Racing
4. New Jersey (USA), Race 2 (Jun 14)-Simona de Silvestro (CH)-Team Stargate Worlds
5. Lime Rock (USA), Jul 18-Simona de Silvestro (CH)-Team Stargate Worlds
6. Autobahn (USA), Race 1 (Jul 25)-John Michael Edwards (USA)-Newman-Wachs Racing
7. Autobahn (USA), Race 2 (Jul 26)-John Michael Edwards (USA)-Newman-Wachs Racing
8. Mid-Ohio (USA), Aug 8-Jonathan Summerton (USA)-Newman-Wachs Racing
9. Trois-Rivieres (CDN), Aug 16-Simona de Silvestro (CH)-Team Stargate Worlds
10. Mosport (CDN), Aug 30-Jonathan Summerton (USA)-Newman-Wachs Racing
11. Road Atlanta (USA), Sep 25-Jonathan Summerton (USA)-Newman-Wachs Racing
12. Laguna Seca (USA), Oct 11-John Michael Edwards (USA)-Newman-Wachs Racing

Total races: 444

Winning drivers

16 wins-Mark Dismore
14 wins-Claude Bourbonnais
12 wins-Patrick Carpentier, Gilles Villeneuve
11 wins-David Empringham
10 wins-Dan Marvin
9 wins-Dean Hall, Anthony Lazzaro, Jimmy Vasser, Jacques Villeneuve Sr
8 wins-Jon Fogarty, Jeff Wood
7 wins-AJ Allmendinger, Jocko Cunningham, Calvin Fish, Richie Hearn, Raphael Matos
6 wins-Kenny Brack, Ryan Dalziel, Scott Goodyear, Hiro Matsushita, Johnny O’Connell, Buddy Rice, Jonathan Summerton, Alex Tagliani, Michael Valiante, Jacques Villeneuve Jr
5 wins-Alex Barron, Jonathan Bomarito, Andrew Bordin, Simona de Silvestro, Memo Gidley, Howdy Holmes, Roberto Moreno, Hoover Orsi, Graham Rahal, Steve Shelton, RK Smith, Colin Trueman
4 wins-Kevin Cogan, John Michael Edwards, Ted Prappas, Keke Rosberg, David Rutledge
3 wins-Michael Andretti, Lee Bentham, John David Briggs, Price Cobb, Stuart Crow, Whitney Ganz, Tom Gloy, Michael Greenfield, Ryan Hunter-Reay, Tonis Kasemets, Tom Klausler, Katherine Legge, Case Montgomery, Franck Perera, Tom Phillips, Bobby Rahal, Greg Ray, Chris Smith, Jamie Spence, Brian Till, Andreas Wirth, Charles Zwolsman
2 wins-Michael Angus, Tony Ave, Antoine Bessette, Geoff Brabham, Luis Diaz, Bob Earl, Elliott Forbes-Robinson, Bertrand Godin, Joey Hand, Scott Harrington, James Hinchcliffe, Jovy Marcelo, Rocky Moran Jr, Markus Niemela, Hubert Phipps, Roberto Quintanilla, Freddy Rhemrev, Rogelio Rodriguez, Bertol Roos, John Tanner, Mitch Thieman, Dan Wheldon, Kenny Wilden
1 win-Martin Basso, Chris Bender, Rod Bennett, Ronnie Bremer, Tim Coconis, David Diem, Alex Figge, Josele Garza, Rod Granberry, Riley Hopkins, Sam Hornish Jr, Harald Huysman, Davy Jones, Kevin LaCroix, Alan Lader, Will Langhorne, Marty Loft, Dave McMillan, Mark Moore, Simon Pagenaud, Robbie Pecorari, Stephane Proulx, Steve Saleen, Trevor Seibert, Carl Skerlong, Joe Sposato, Junior Strous, Robert Wickens, Roger Yasukawa

Total winning drivers: 118

Winning nationalities

Argentina-1 driver (Basso)
Australia-1 driver (Brabham)
Brazil-3 drivers (Matos, Moreno, Orsi)
Canada-19 drivers (Bentham, Bessette, Bordin, Bourbonnais, Carpentier, Empringham, Godin, Goodyear, Hinchcliffe, LaCroix, Proulx, Rutledge, Tagliani, Valiante, G Villeneuve, J Villeneuve Sr, J Villeneuve Jr, Wickens, Wilden)
Denmark-1 driver (Bremer)
Estonia-1 driver (Kasemets)
Finland-2 drivers (Niemela, Rosberg)
France-2 drivers (Pagenaud, Perera)
Germany-1 driver (Wirth)
Great Britain-5 drivers (Dalziel, Fish, Legge, Spence, Wheldon)
Holland-2 drivers (Strous, Zwolsman)
Japan-1 driver (Matsushita)
Mexico-4 drivers (Diaz, Garza, Quintanilla, Rodriguez)
New Zealand-1 driver (McMillan)
Norway-1 driver (Huysman)
Philippines-1 driver (Marcelo)
Sweden-2 drivers (Brack, Roos)
Switzerland-1 driver (de Silvestro)
United States-69 drivers (Allmendinger, Andretti, Angus, Ave, Barron, Bender, Bennett, Bomarito, Briggs, Cobb, Coconis, Cogan, Crow, Cunningham, Diem, Dismore, Earl, Edwards, Figge, Fogarty, Forbes-Robinson, Ganz, Gidley, Gloy, Granberry, Greenfield, Hall, Hand, Harrington, Hearn, Holmes, Hopkins, Hornish Jr, Hunter-Reay, Jones, Klausler, Lader, Langhorne, Lazzaro, Loft, Marvin, Montgomery, Moore, Moran Jr, O’Connell, Pecorari, Phillips, Phipps, Prapas, B Rahal, G Rahal, Ray, Rhemrev, Rice, Saleen, Seibert, Shelton, Skerlong, C Smith, RK Smith, Sposato, Summerton, Tanner, Thieman, Till, Trueman, Vasser, Wood, Yasukawa)

Total winning nationalities: 19

Winning manufacturers

224 wins-Swift
160 wins-Ralt
37 wins-March
8 wins-Reynard
6 wins-Chevron
5 wins-Lola
4 wins-Lotus

Total wins: 444 by 7 manufacturers

Winning engine manufacturers

228 wins-Toyota
169 wins-Ford
47 wins-Mazda

Total wins: 444 by 3 engine manufacturers

Winning teams

36 wins-Lynx Racing
30 wins-Forsythe Championship Racing (Forsythe Green, Forsythe-Pettit, Forsythe Racing)
25 wins-P1 Racing (P-1)
17 wins-Shierson Racing
13 wins-Ecurie Canada, PPI Motorsports, Sierra Sierra Enterprises
11 wins-Genoa
10 wins-BDJS, Jon Norman Racing, Newman Wachs Racing
9 wins-Cava-Fortner Mts, Hylton Motorsports, McNeill Motor Cars (Motorsports)
8 wins-Pacific Coast Motorsports
7 wins-Condor Motorsports, Cunningham Motorsports, Dennis Eade Competition, DSTP Motorsports, Dwayne Anderson, Pierre Phillips (Pierre’s Motors Racing, Phillips Motorsport), Ralt America, RuSPORT, Stuart Moore Racing
6 wins-Polestar Racing Group
5 wins-Brack Racing, Lane Sports, Mi-Jack Conquest Racing, Tom Mitchell, Truesports
4 wins-3001 International, Brooks Associates Racing, ComPrep, Dorricott Racing, John Hayes, Opert Racing, Shank Racing, Team Stargate Worlds, Team Tui, Theodore Racing
3 wins-Briggs Racing, Canaska Racing, Cole Performance, Conte Racing, Della Penna, Greenfield Industries, Mathiasen Motorsports, Oppliger, Team Tonis
2 wins-Cameron-McGee, Carl Haas, Chris Clark Racing, Great Plains Racing, H-Promotions Team, Jeff Wood Racing, Mitch Thieman, NTS Racing, PR1 Motorsports, Rainbow Racing, Rick Shea Racing, Riley Hopkins, Sandy Dells Racing, Scott Racing
1 win-Active Motorsports, Alan Lader, BG Performance Motorsport, Chris Bender, Cobb Racing, Concept Motorsports, Dan Marvin Racing, Dave McMillan, DMR, Fortner Lucini, Garvin Brown, Gas Saleen Racing, Gelles Racing, Genoa Racing, Graphics International, Hansen Racing, High Bridge Racing, Karges Sport, McCall Racing, MDB Systems, Morgan Racing, Olsson Engineering, Rhemrev, Rod Bennett, Sigma Autosport, Sposato Racing, Steve Shelton, Team Australia, Tim Coconis Racing, Tom Klausler Racing, Villeneuve Racing, World Speed Motorsports

Total wins: 444 by 95 teams