Past NASA 25 Hours of Thunderhill Winners:

2010, No. 75 Team Mercer Motorsports Porsche GT3 ES, 628 laps, fast lap 1:45.986
2009, No. 75 Team Mercer Motorsports, 761 laps, fast lap 1:47.224
2008, No. 19 Team Mazdaspeed /Team MER 1 ES, 477 laps, fast lap 1:58.720
2007, No. 3 Parallax Racing, LLC ES, 661 laps, fast lap 1:44.210
2006, No. 27 Team O’Connell Racing Porsche GT3 ES, 705 laps, fast lap 1:48.138
2005, No. 24 Team Lost ‘N Spaced Racing ES, 665 laps, fast lap 2:01.9
2004, No. 18 Team Crazy Redhead Racing, Porsche RSR ES, 681 laps, fast lap 1:47.90
2003, No. 64 Glenn Yee Motorsports ES, 622 laps, fast lap 1:53.241
2002, No. 88 Extreme Performance, BMW M3 E0, completed 309, fast lap time 2:04.8
*Note 2002 was a 12-hour race