Outdoor X12 Endurance Run & Ruck
About this race
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
Pick your distance
Running
2026 Outdoor X12 Hours Endurance Run
2026 Outdoor X12 Hours Endurance RUCK
Same rules as the run with ruck requirements as follows: If you weigh : < 150 lbs, ruck 20 lbs > 150 lbs, ruck 30 lbs Finishers get a patch as well.
Typical race-day weather
Based on 9 years of Open-Meteo archive data for this event's race dates in Dayton, plus the 3 days either side.
The sun rises at 7:35 AM and sets at 7:16 PM local time (EDT) in Dayton on October 3, 2026 — 11h 41m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Results — Outdoor X12 Endurance Run & Ruck
Other races near Dayton
Different organizers, within 40 miles, in the next three months
Southwest Ohio Lion's Steps 13 OH 6 Walk / Run
Zombie Dogz 5K
The Running Pumpkin 5K
Dayton Wolverines XC Invitational
🏃 Plan Your Next Race in Dayton
Find upcoming events by distance:
- Dayton 5K Races 36 races
- 10K Run Events in Dayton 2 races
- Dayton Half Marathons 2 races
- Dayton Running Calendar 2026 50 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 52 Dayton events
Spotted something wrong? Tell us and we'll fix it.