The Firefly Overnight Endurance Challenge
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The Firefly Overnight Endurance Challenge & 10k Trail Race
The event takes place Saturday June 27 to Sunday June 28, 2026 in Lewis Center, Ohio, at the Alum Creek State Park Group Campsite. It offers overnight trail running on the Rocks and Roots single track trail and additional daytime 10K and kids race options.
Events
- Firefly Overnight 12 hour Endurance Challenge
- Firefly Sunset 10K
- Firefly Sunrise 10K
- Sunrise and Sunset Double
- Sunrise Kids Mile Race
The endurance challenge is a fully supported, overnight 12 hour event where only completed laps count toward official mileage. The course is single track and may be dark; participants must use a headlamp or flashlight. Reflective gear, glow sticks, and body paint are encouraged for visibility.
Participant rules include permitting pacers only after the first 10K and allowing crew tents in a designated zone at the lap point. Minors aged 14 to 18 may run the overnight challenge only if an adult is on site for the duration; children under 14 are not permitted. The course layout is subject to change and staying on the marked trail is the participant responsibility.
Additional information notes an event shirt, event buff, and event pint glass for participants, a pancake breakfast, optional camping at the group camp, tent site reservations for a fee, and a no refund no bib transfer policy. Visit the organization's website for the most recent information.
