The NASA 25 Hour

Frasun Racing drove to victory in the GT Challenge and took picked up a $10,000 prize from Toyo Tires for the effort. The competition...

The grid is set for Saturday’s 15th running of the NASA 25 Hours of Thunderhill presented by Hawk Performance as more than 50 cars...

Mazda called it the 50-hour project. The idea behind the project was to demonstrate that racing a Mazda2 is affordable. The math behind 50-hour...

Sports racers definitely had the speed advantage at the 2015 25 Hours of Thunderhill, but it’s getting the cars to go the distance that...

The action everyone comes to see and be part of at Thunderhill is on the racetrack. However, the action in the pits and paddock...

The E2 class is in something of a lull in terms of participation. Heading into the 25 Hours of Thunderhill, there was only one...

Registration for the 2022 25 Hours of Thunderhill has opened. All teams interested in taking part in the longest closed-course endurance race in North...

The Dutch American Racing Team came all the way from the Netherlands to race in the 2013 25 Hours of Thunderhill in E3. The...

Closing in on the last few hours of NASA’s 25 Hours of Thunderhill presented by Hawk Performance, the leaderboard is tightening as teams race...

Overall Position Class Position Team Laps 1 ES/1 Flying Lizard Motorsports 690 2 ES/2 Quick Racing Products 655 3 ES/3 Prototype Development Group 631 4 ES/4 Stammer Inc./Bavarian Performa 626 5 ESR/1 Gryphon Racing 626 6 E0/1 El Diablo Motorsports 617 7 E1/1 Grip Racing 0 615 8 E0/2 Edge "Last Minute" Motorworks 607 9 E1/2 Grip Racing 95 607 10 E0/3 RoadShagger Racing 1 603 11 E1/3 THRW/Honda Racing...