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The Firefly Overnight Endurance Challenge & 10k Trail Race

📅 June 26, 2027 (estimated date)📍 Lewis Center · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (June 27, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

6.2 mi12 h

About

The Firefly Overnight Endurance Challenge & 10k Trail Race takes place in Lewis Center, Ohio, on the Rocks and Roots trail at Alum Creek State Park on June 26, 2027, with a 10K (6.2 miles) at 8 a.m. and the 12-hour Overnight Endurance Challenge starting at 8 p.m.

Participants can choose between the Overnight Endurance Challenge, the Sunset & Sunrise 10K and the Kids Mile, which is free. Runners cover trails lit by fireflies and must carry headlamps or flashlights. Camping near the start area is encouraged, and a pancake breakfast is served. Minors aged 14 to 18 may take part with an adult. Participants receive a T-shirt and a medal.

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