The NASA 25 Hours of Thunderhill presented by Hawk Performance is under way at Thunderhill Raceway Park in Willows, Calif. Live radio stream is available at http://livestream.com/endurance-radio/2015thunderhillraceLive timing: http://nasa25hour.com/live-timing/ Also, www.MazdaLive.com is showing in car video and pit cam of its cars and team.Sunday, 7am: The 13th running of the...

The 25 Hours of Thunderhill presented by Hawk Performance and sanctioned by the National Auto Sport Association (NASA) was won today by the Davidson Racing Norma prototype at Thunderhill Raceway in Willows, Calif.The No. 17 Davidson Racing Norma driven by Brian Frisselle, Randy Pobst, Alex Lloyd and Kyle Marcelli took...

Mazda is streaming live video from the NASA 25 Hours of Thunderhill Presented by Hawk Performance.The 25 Hours of Thunderhill presented by Hawk Performance and sanctioned by the National Auto Sport Association (NASA) has been running for 19 hours at Thunderhill Raceway in Willows, Calif.The No. 17 Davidson Racing Norma...