Leadville Big Friggin Loop is a ultra-endurance mounting biking event consisting of approximately 115 miles and 14,500 feet of climbing.  Described as: singletrack and gravel mix, high elevation, back country self supported endurance epic within the San Isabel and White River National Forests.

This race is a non-commercial, self supported event starting and ending in Leadville, Colorado.

The event is part of the Colorado Endurance Series that are a collection of “grassroots cycling events.”  Hosted locally by Rafael Millan-Garcia, a.k.a. Rafa the Hispanic Mechanic of Leadvelo Bicicasa.

The Colorado Endurance Series is a collection of the finest, self-supported, backcountry mountain bike endurance (solo effort) rides in Colorado! We are the home of ultra-endurance mountain biking. Follow updates on Facebook.