Big Burro 24HR

APR
30
2027
A 24 hour trail race on roughly 5 mile loops in Maple Hills near Big Bear City, CA, with on-course aid, basecamp crew access, and a 100 mile 20 lap challenge.
Fri 30 Apr 2027

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Big Burro 24HR

The Big Burro 24HR is a 24 hour timed trail race held on the Maple Hills Trail System near Big Bear City, CA. Runners complete as many laps as possible on an approximately 5 mile loop within the 24 hour time limit. The overall winner is the runner with the most full laps.

The course uses existing singletrack and includes runnable sections, punchy climbs, rocky stretches, and fast descents typical of Big Bear mountain terrain. Each lap returns to a Start/Finish basecamp that serves as primary aid, timing, crew access, medical support, and race operations.

Aid is also available at on-course stations named Shore Drive and Elementary Trailhead. Crewing is permitted from the Start/Finish area only.

Distances and challenges include:

  • 5-mile loop
  • 100 miles (20 laps)

The event offers awards to top overall male and female finishers and recognizes runners who complete twenty full laps as Burro Hundred finishers. Burro Hundred finishers receive an official belt buckle, recognition on the finisher list, and lifetime membership in the Burro Hundred Club. The event will establish permanent course records for the greatest number of laps in 24 hours and for the fastest completion of 20 laps.

The race supports trail stewardship through a volunteer trail work day, removal of course markings after the event, and a $5 donation from each entry to the Bear Valley Education Foundation for trail maintenance. Visit the organization's website for the most recent information.

24 Hours

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