| Year | Driver(s) | Car | Dist. |
| 1962 | Dan Gurney | Lotus 19 Ford | 502.791 km |
| 1963 | Pedro Rodriguez | Ferrari GTO | 494.551 km |
| 1964 | Pedro Rodriguez/Phil Hill | Ferrari GTO | --- |
| 1965 | Ken Miles/Lloyd Ruby | Ford GT | ---
| 1966 | Ken Miles/Lloyd Ruby | Ford Mk. II | 4157.222 km |
| 1967 | Lorenzo Bandini/Chris Amon | Ferrari 330 | 4083.646 km |
| 1968 | Vic Elford/Jochen Neerpasch | Porsche 907 | 4126.567 km |
| 1969 | Mark Donohue/Chuck Parsons | Lola Chevrolet | 3838.382 km |
| 1970 | Pedro Rodriguez/Leo Kinnunen | Porsche 917 | 4439.279 km |
| 1971 | Pedro Rodriguez/Jackie Oliver | Porsche 917K | 4218.542 km |
| 1972 | Mario Andretti/Jacky Ickx | Ferrari 312P | 1189.531 km |
| 1973 | Peter Gregg/Hurley Haywood | Porsche Carrera | 4108.172 km |
| 1974 | NOT HELD |
| 1975 | Peter Gregg/Hurley Haywood | Porsche Carrera | 4194.015 km |
| 1976 | Peter Gregg/ Brian Redman/John Fitzpatrick | BMW CSL | 3368.035 km |
| 1977 | Hurley Haywood/John Graves/Dave Helmick | Porsche Carrera | 4208.499 km |
| 1978 | Peter Gregg/Rolf Stommelen/Antoine Hezemans | Porsche Turbo | 4202.319 km |
| 1979 | Hurley Haywood/Ted Field/Danny Ongais | Porsche Turbo | 4227.039 km |
| 1980 | Rolf Stommelen/Volkert Merl/Reinhold Joest | Porsche Turbo | 4418.615 km |
| 1981 | Bobby Rahal/Brian Redman/Bob Garretson | Porsche Turbo | 4375.355 km |
| 1982 | John Paul Sr./John Paul Jr./Rolf Stommelen | Porsche Turbo | 4443.334 km |
| 1983 | A.J. Foyt/Preston Henn/Bob Wollek/Claude Ballot-Lena | Porsche Turbo | 3819.167 km |
| 1984 | Sarel van der Merwe/Tony Martin/Graham Duxbury | March Porsche | 3986.023 km |
| 1985 | A.J. Foyt/Bob Wollek/Al Unser Sr./Thierry Boutsen | Porsche 962 | 4027.673 km |
| 1986 | Al Holbert/Derek Bell/Al Unser Jr | Porsche 962 | 4079.236 km |
| 1987 | Al Holbert/Derek Bell/Chip Robinson/Al Unser Jr | Porsche 962 | 4314.136 km |
| 1988 | Raul Boesel/Martin Brundle/John Nielsen | Jaguar XJR-9 | 4170.905 km |
| 1989 | John Andretti/Derek Bell/Bob Wollek | Porsche 962 | 3557.873 km |
| 1990 | Davy Jones/Jan Lammers/Andy Wallace | Jaguar XJR-12 | 4359.970 km |
| 1991 | Hurley Haywood/John Winter/Frank Jelinski/Henri Pescarolo/Bob Wollek | Porsche 962-C | 4119.341 km |
| 1992 | Masahiro Hasemi/Kazuyoshi Hoshino/Toshio Suzuki | Nissan R-91 | 4365.700 km |
| 1993 | P.J. Jones/Mark Dismore/Rocky Moran | Toyota Eagle | 3999.027 km |
| 1994 | Paul Gentilozzi/Scott Pruett/Butch Leitzinger/Steve Millen | Nissan 300 ZXT | 4050.090 km |
| 1995 | Jurgen Lassig/Christophe Bouchut/Giovanni Lavaggi/Marco Werner | Porsche Spyder | 3953.192 km |
| 1996 | Wayne Taylor/Scott Sharp/Jim Pace | Oldsmobile Arness MK-III | 3993.298 km |
| 1997 | Rob Dyson/James Weaver/Butch Leitzinger/Andy Wallace/John Paul Jr./Eliot Forbes-Robinson/John Schneider | Ford R&S MK-III | 3953.192 km |
| 1998 | Mauro Baldi/Arie Luyendyk/Gianpiero Moretti | Ferrari 333SP | 4073.507 km |
| 1999 | Elliot Forbes-Robinson/Butch Leitzinger/Andy Wallace | Riley & Scott Ford | 4056.319 km |
| 2000 | Olivier Beretta/Dominique Dupuy/Karl Wendlinger | Dodge Viper | 4142.258 km |
| 2001 | Ron Fellows/Chris Kneifel/Frank Freon/Johnny O'Connell | Chevrolet Corvette | 3758.398 km |
| 2002 | Didier Theys/Fredy Lienhard/Max Papis/Mauro Baldi | Judd Dallara | 4102.153 km |
| 2003 | Kevin Buckler/Michael Schrom/Timo Bernhard/Jorg Bergmeister | Porsche | 3981.839 km |
| 2004 | Christian Fittipaldi/Terry Borcheller/Forest Barber/Andy Pilgrim | Pontiac Doran | 3013.98 km |
| 2005 | Max Angelelli/Wayne Taylor/Emmanuel Collard | Pontiac Riley | 4068.300 km |
| 2006 | Scott Dixon/Dan Wheldon/Casey Mears | Lexus Riley | 4205.82 km |
| 2007 | Juan Pablo Montoya/Scott Pruett/Salvador Duran | Lexus Riley | 3826.972 km |
| 2008 | Juan Pablo Montoya/Dario Franchitti/Scott Pruett/Memo Rojas | Lexus Riley | 3981.839 km |
| 2009 | David Donohue/Antonio García/Darren Law/Buddy Rice | Porsche Riley | 4211.009 km |
| 2010 | Joao Barbosa/Mike Rockenfeller/Ryan Dalziel/Terry Borcheller | 4325.594 km |