Races›United States›Ohio›The Firefly Overnight Endurance Challenge & 10k Trail Race
Lewis Center, OH, seen from above
June 2027 · date to be announced

The Firefly Overnight Endurance Challenge & 10k Trail Race

Lewis Center, Ohio · United States
TrailForest

12 hours overnight on Ohio's only runner-built trail

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Course

Run on the Rocks and Roots singletrack at Alum Creek State Park, starting and finishing at the group campsite near Lewis Center. The 12-hour overnight challenge runs 8pm to 8am on repeating loops scored by laps completed, with headlamps required; standalone Sunset and Sunrise 10Ks bookend the night. The trail is well marked throughout.

Sunset 10K10 km
Sunrise 10K10 km
1.6 km1 mi
Overnight Endurance Challengtimed

Key dates

Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.

About

Join us as we welcome and celebrate the most efficient light in the world… the firefly! (nearly 100% of the energy in the chemical reaction within the fireflies light organ is emitted light… it's true) Whether you're looking to set a distance PR or just looking to run in the dark with some friends, "The Firefly Overnight Endurance Challenge and Sunset & Sunrise 10k" will offer you that opportunity with 12-hours of fully supported, overnight-racing throughout the ONLY trail in central Ohio built BY runners, FOR runners!

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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.