The NASA 25 Hour of Ozarks, (formerly the 25 Hours of Thunderhill), 13 November | Event in Gravois Mills | AllEvents

The NASA 25 Hour of Ozarks, (formerly the 25 Hours of Thunderhill)

NASA MidAmerica

Highlights

Thu, 13 Nov, 2025 at 07:00 am

Ozarks International Raceway

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Date & Location

Thu, 13 Nov, 2025 at 07:00 am - Sun, 16 Nov, 2025 at 01:00 pm (CST)

Ozarks International Raceway

29211 MO-135, Gravois Mills, MO 65037-5312, United States

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Only get lost while having fun, not on the road!

About the event

The NASA 25 Hour of Ozarks, (formerly the 25 Hours of Thunderhill)
Welcome to the NASA 25 Hours of Ozarks. Hit Going or Interested to follow this event.
The Longest and one of the most famous Endurance Races in the Country.
Formerly the Iconic 25 Hours of Thunderhill
Welcome to History in the Making! Be a part of this race.

The legendary 25-hour endurance race that captured the spirit of racers for decades at Thunderhill is reborn at
Ozarks International Raceway. This is where long run endurance meets the most advanced tech in racing.
This is your chance to be part of the longest, most grueling, most iconic endurance race in North America.

Challenge your team. Test your machine. Push yourself beyond the limits. Build better drivers. Become a better team.

Event Details
Event: NASA 25 Hours of Ozarks
Date: November 13-16
Pro Pass Holders Early Entry 2pm, Nov 12
Load in 5pm, Nov 12
Location: Ozarks International Raceway, Gravois Mills, MO
Classes: Multi-Class. 5 classes
HYC (Hypercar)
PLE (Prototype Lite Endurance)
GTE (Grand Touring Endurance)
STE (Super Touring Endurance)
TCE (Touring Car Endurance)
Single Class Qualifying
Entry Cap: 62 Teams
🔥
What’s New?
New venue with dynamic natural terrain.
Fresh challenges and strategy with the unique Ozarks circuit.
Sector Timing. You'll know where your team is fastest and slowest. Compared with all other teams.
Day and Night Practice - Thursday, Nov. 13.
Test and Tune - Friday, AM Nov 14.
Speed Delta's set and managed. Overall lap times 2:45 or better.
Single Class Qualifying, Best Time
My Laps in car virtual flags join the best corner flaggers in racing. GPS satellite location monitoring shows exactly where you are every second.
Livestream for the full 25 Hour, roving announcers, guest speakers. Your team and Sponsors highlighted.
WhatsApp team communication from tower to team.
Yellow Flag Pit Stops
Team/Sponsor Suites Available

🚀
Register Your Team Now: DriveNASA.com, Choose, MidAmerica Region. https://members.drivenasa.com/events/5157 Get all the info you need at NASA25Hour.com

Questions?

We'd like to hear from you.

Donna or Randy Lane

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❤️🤍💙



Also check out other Sports events in Gravois Mills, Workshops in Gravois Mills, Virtual events in Gravois Mills.

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Nearby Hotels

Ozarks International Raceway, 29211 MO-135, Gravois Mills, MO 65037-5312, United States
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Host Details

NASA MidAmerica

NASA MidAmerica

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The NASA 25 Hour of Ozarks, (formerly the 25 Hours of Thunderhill), 13 November | Event in Gravois Mills | AllEvents
The NASA 25 Hour of Ozarks, (formerly the 25 Hours of Thunderhill)
Thu, 13 Nov, 2025 at 07:00 am