The 25th Hour Endurance Run
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The 25th Hour Endurance Run
The 25th Hour Endurance Run is a 25-hour timed trail event held at Camp Grier in Old Fort, North Carolina on Saturday, October 31, 2026. Runners complete repeated laps of a measured trail loop and are ranked by the number of complete laps finished within the 25-hour period.
The course is a 3.6 mile loop that combines single-track trail, gravel sections, and a grassy loop near the lake. Each loop has about 600 feet of elevation gain. The main aid station and timing tent are located in the grassy lake area; a water-only station is available each lap. Aid supplies include typical ultra food and some vegetarian options.
Tent camping is available in a designated grassy field called tent city; camping is free and tent-only. Tent city officially opens on Friday, October 30 at 4:00 pm for early setup. Lodging options such as bunks, rooms, or cabins are available through Camp Grier for crews and family.
Rules emphasize lap completion only: partial laps are not counted and ties are broken by the elapsed time of the last completed lap. Participants will use chip-enabled bibs and timing is handled by a professional timing service. Pacers are permitted after the 10-hour mark. No pets are allowed on site and no open fires are permitted. Participants are asked to avoid placing sleeping tents along the course edge and to pack out their trash.
Awards include milestone recognitions at 25, 50, and 75 miles and handcrafted awards for the top three male and top three female finishers. No transfers or refunds are allowed after July 31, 2026. Visit the organization's website for the most recent information.
