# 2005 Speed World Challenge

The 2005 Speed World Challenge season was the 16th season of the Sports Car Club of America's World Challenge series. The series' title sponsor was television network Speed Channel, who broadcast all the races. Championships were awarded for grand touring and touring cars. The season began on March 18 and ran for eleven rounds. Andy Pilgrim and Cadillac won the championships in GT, and Peter Cunningham and Acura won in Touring Car.

## Schedule

| Rnd | Date | Circuit | Supporting | Distance | GT Winning Car | TC Winning Car |
| Rnd | Date | Circuit | Supporting | Distance | GT Winning Driver | TC Winning Driver |
| 1 | March 18 | Sebring International Raceway, Sebring, Florida | American Le Mans Series (12 Hours of Sebring) | 67 mi (108 km) (TC) 74 mi (119 km) (GT) | Dodge Viper | Acura TSX |
| 1 | March 18 | Sebring International Raceway, Sebring, Florida | American Le Mans Series (12 Hours of Sebring) | 67 mi (108 km) (TC) 74 mi (119 km) (GT) | Tommy Archer | Peter Cunningham |
| 2 | April 3 | Streets of St. Petersburg, Florida | IndyCar Series (Grand Prix of St. Petersburg) | 47 mi (76 km) (TC) 52 mi (84 km) (GT) | Dodge Viper | Mazda 6 |
| 2 | April 3 | Streets of St. Petersburg, Florida | IndyCar Series (Grand Prix of St. Petersburg) | 47 mi (76 km) (TC) 52 mi (84 km) (GT) | Tommy Archer | Randy Pobst |
| 3 | April 16 April 17 | Road Atlanta, Braselton, Georgia | American Le Mans Series (Grand Prix of Atlanta) | 64 mi (103 km) (TC) 74 mi (119 km) (GT) | Cadillac CTS-V | Acura TSX |
| 3 | April 16 April 17 | Road Atlanta, Braselton, Georgia | American Le Mans Series (Grand Prix of Atlanta) | 64 mi (103 km) (TC) 74 mi (119 km) (GT) | Max Papis | Pierre Kleinubing |
| 4 | May 22 May 21 | Mid-Ohio Sports Car Course, Lexington, Ohio | American Le Mans Series (Grand Prix of Atlanta) | 56 mi (90 km) (TC) 65 mi (105 km) (GT) | Porsche 911 Cup | Acura TSX |
| 4 | May 22 May 21 | Mid-Ohio Sports Car Course, Lexington, Ohio | American Le Mans Series (Grand Prix of Atlanta) | 56 mi (90 km) (TC) 65 mi (105 km) (GT) | Wolf Henzler | Pierre Kleinubing |
| 5 | June 25 June 26 | Burke Lakefront Airport, Cleveland, Ohio | Champ Car World Series (Grand Prix of Cleveland) | 63 mi (101 km) (TC) 69 mi (111 km) (GT) | Porsche 911 Cup | Acura TSX |
| 5 | June 25 June 26 | Burke Lakefront Airport, Cleveland, Ohio | Champ Car World Series (Grand Prix of Cleveland) | 63 mi (101 km) (TC) 69 mi (111 km) (GT) | Robin Liddell | Pierre Kleinubing |
| 6 | July 2 | Lime Rock Park, Lakeville, Connecticut | American Le Mans Series (New England Grand Prix) | 63 mi (101 km) (TC) 67 mi (108 km) (GT) | Cadillac CTS-V | BMW 325i |
| 6 | July 2 | Lime Rock Park, Lakeville, Connecticut | American Le Mans Series (New England Grand Prix) | 63 mi (101 km) (TC) 67 mi (108 km) (GT) | Max Angelelli | Bill Auberlen |
| 7 | July 17 July 16 | Infineon Raceway, Sonoma, California | American Le Mans Series (Grand Prix of Sonoma) | 58 mi (93 km) (TC) 63 mi (101 km) (GT) | Chevrolet Corvette C6 | BMW 325i |
| 7 | July 17 July 16 | Infineon Raceway, Sonoma, California | American Le Mans Series (Grand Prix of Sonoma) | 58 mi (93 km) (TC) 63 mi (101 km) (GT) | Lou Gigliotti | Bill Auberlen |
| 8 | July 30 July 31 | Portland International Raceway, Portland, Oregon | American Le Mans Series (Portland Grand Prix) | 61 mi (98 km) (TC) 65 mi (105 km) (GT) | Chevrolet Corvette C6 | Mazda 6 |
| 8 | July 30 July 31 | Portland International Raceway, Portland, Oregon | American Le Mans Series (Portland Grand Prix) | 61 mi (98 km) (TC) 65 mi (105 km) (GT) | Dino Crescentini | Randy Pobst |
| 9 | August 13 August 14 | Streets of Denver, Colorado | Champ Car World Series (Centrix Financial Grand Prix of Denver) | 49 mi (79 km) (TC) 53 mi (85 km) (GT) | Porsche 911 Cup | Acura RSX |
| 9 | August 13 August 14 | Streets of Denver, Colorado | Champ Car World Series (Centrix Financial Grand Prix of Denver) | 49 mi (79 km) (TC) 53 mi (85 km) (GT) | Wolf Henzler | Eric Curran |
| 10 | September 4 September 3 | Mosport International Raceway, Bowmanville, Ontario | American Le Mans Series (Grand Prix of Mosport) | 69 mi (111 km) (TC) 64 mi (103 km) (GT) | Cadillac CTS-V | Mazda 6 |
| 10 | September 4 September 3 | Mosport International Raceway, Bowmanville, Ontario | American Le Mans Series (Grand Prix of Mosport) | 69 mi (111 km) (TC) 64 mi (103 km) (GT) | Ron Fellows | Charles Espenlaub |
| 11 | October 16 | Mazda Raceway Laguna Seca, Monterey, California | American Le Mans Series (Monterey Sports Car Championships) | 58 mi (93 km) (TC) 45 mi (72 km) (GT) | Cadillac CTS-V | Audi A4T |
| 11 | October 16 | Mazda Raceway Laguna Seca, Monterey, California | American Le Mans Series (Monterey Sports Car Championships) | 58 mi (93 km) (TC) 45 mi (72 km) (GT) | Max Papis | John Angelone |