Tentsmuir Forest 8-hour Challenge

Tentsmuir Forest 8-hour Challenge, run by NU Limits Running, takes place at Tentsmuir Forest near St Andrews in Scotland. The event invites competitors to complete as many 4.366-mile trail loops as possible within an eight-hour window. Each lap climbs about 85 feet, and a clip-card system records completed laps.

A 3-lap tally equals a half marathon, 6 laps the full marathon, and 7 or more laps an ultramarathon. The route is on forest trails, with a GPX map available. Basecamp provides kit storage; spectators are welcome.

Entries are open via EntryCentral. Runners may store gear at Basecamp, and the event fosters a supportive, community atmosphere. Visit the organization's website for the most recent information.