25 Hours of Ozarks (formerly 25 hours of Thunderhill)

The Longest Endurance Race in North America! Formerly The 25 Hours of Thunderhill. New Track, Same Legendary Race. The 25 Hours of Ozarks will challenge drivers and teams in every way. Built by pro endurance team. By drivers for drivers! Save the Date, Nov.13-16, 2025 for the return of the 25 in 2025. Hypercars, Prototypes, Porsche, GT3, GT4, BMW, +++. 30+ hours of track time. Contact 25 Team at: 25hr@drivenasa.com. Registration coming soon at Drivenasa.com. Climbing esses at OIR by WJP Aerial