Ancient Oaks 100-Mile Endurance Run
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Event overview
The Ancient Oaks 100-Mile Endurance Run takes place in the Enchanted Forest Nature Sanctuary in Titusville, Florida on Saturday-Sunday, December 20-21, 2025. The event is an invitation-only, no-fee, low-aid 100-mile endurance race with a hard cap of 60 runners. The entry process uses a waiting list drawn from requests submitted between June 1 and June 30, with invitations sent on or about July 3, 2025. The event listing shows the race is full and the waiting list has closed.
Course and format
The race is run as 29 loops of a 3.46-mile loop for a total of 100.34 miles. Runners are given a 32-hour time limit to complete the distance. The loop uses trails within the park and is marked. Surface features include a small section of asphalt, sand and grass two-track, rolling wood-chip trail, a short concrete path, twisty rooty single-track, two boardwalk sections, a short bridge, a sharp 15-foot hill, and areas of loose sand. There is no buckle awarded for finishing. The selection process for entrants is private. Visit the organization's website for the most recent information.
