2026 Outdoor X12 Endurance Run & Ruck
Sat, Oct 3, 2026, 3:00 AM EDT
- Type
- Run
Sign up and verify details on the organizer's official page.
Race feel
Test your endurance on a flat, 2.7+ mile grass and trail loop at the 12-hour Outdoor X12 Endurance Run & Ruck in Dayton.
The Outdoor X12 Endurance Run & Ruck in Dayton, OH, offers a unique 12-hour challenge. Collaborating with Five Rivers Metroparks and the Subaru Outdoor Experience, this event features a flat, 2.7+ mile loop course. Runners will navigate a diverse terrain, primarily consisting of grass and trail double track, with a small portion on a bike path. Finisher medals await participants who complete the full 12 hours on the course, celebrating their endurance. This event is designed for those seeking a sustained running or rucking experience in a natural setting.
What to expect
- A 12-hour endurance challenge on a 2.7+ mile loop.
- Navigate a flat course featuring 96% grass/trail double track and 4% bike path.
- Earn a finisher medal for completing the full 12 hours on the course.
Standout details
- 12-hour endurance challenge
- Flat 2.7+ mile loop course
- Mostly grass and trail double track
- Finisher medals for 12-hour completion
From the organizer
THE RACE
The Outdoor Experience 12 Hour Race (affectionately known as the OX12) is produced in collaboration with Five Rivers Metroparks and the Subaru Outdoor Experience.
2.7+ mile loop course and flat! Finisher Medals for those that travel upon the course for the full 12 hours. THE COURSE
4% bike path, 96% grass/trail double track. ADDITIONAL COURSE INFORMATION
Course Map Course Video Official Outdoor Experience Website
Medal