2026 CKF Leadville Trail 100 MTB

The 2026 CKF Leadville Trail 100 MTB, set for Saturday, August 15, 2026, in Leadville, Colorado, beckons endurance athletes to tackle one of the world's most challenging and prestigious mountain bike races. Known affectionately as "The Race Across the Sky," this event pushes riders over approximately 100 miles of high-altitude, extreme terrain in the heart of the Colorado Rockies. The out-and-back course begins in downtown Leadville at an impressive 10,152 feet and climbs to a breathtaking 12,500 to 12,600 feet at its highest point, accumulating a staggering 11,000 to 12,480 feet of elevation gain. Typical race day conditions in mid-August feature pleasant highs around 69F and lows around 38F, with a mere 7% chance of precipitation, though mountain weather can always surprise.

The course is a true test of grit and determination, weaving through rugged jeep roads, some singletrack, and technical descents, all set against a backdrop of stunning panoramic vistas. Riders will conquer iconic climbs such as St. Kevins, Sugarloaf, and the formidable Powerline, which is notorious for its steep, rutted sections. The long, sustained ascent to Columbine Mine is particularly brutal, gaining over 3,000 feet in just eight miles and often requiring participants to hike-a-bike at extreme altitudes where two-way traffic on the narrow trail adds to the challenge. Six well-stocked aid stations, including Pipeline and Twin Lakes Dam, offer crucial support with a variety of nutrition and fluids, manned by an enthusiastic team of volunteers.

What makes the Leadville Trail 100 MTB truly unique is its rich history, stemming from an effort to revitalize Leadville's economy, and its coveted finisher's belt buckle – a symbol of enduring the race's immense physical and mental demands. Beyond personal achievement, the 2026 CKF Leadville Trail 100 MTB partners with the Chris Klug Foundation, allowing participants to ride for a noble cause, raising awareness for organ, eye, and tissue donation. This race is not merely a ride; it’s an unforgettable journey that embodies the spirit of pushing limits and giving back.