Longer and more challenging than Le Mans or Daytona; 25 Hours of Thunderhill is the new king of enduros. Do you have what it takes to survive? Then join our world-class field of racers in the most severe endurance race on the planet - December 5-7, 2008.

2008 Registration Will Open After the Summer

Applicable Rules:

NASA Club Codes and Regulations
NASA Endurance Rules
25 Hour Supplemental Rules

VISIT OUR NASA 25 HOUR FORUM! CLICK HERE