Leadville 10K Run 2026
About This Event
The Leadville 10K offers trail runners a taste of the legendary “Race Across the Sky” course without committing to the full 100-mile ultramarathon. This out-and-back route covers the opening and closing segments of the iconic Leadville Trail 100, letting participants experience the same gravel roads that have challenged endurance athletes for decades.
Starting at 9,767 feet above sea level, the 6.2-mile course climbs 465 feet to reach its highest point at 10,154 feet. The route transitions from paved roads to dirt paths, demanding adaptability as runners navigate the varied terrain. The altitude alone presents a formidable challenge, testing both lungs and legs as the thin mountain air makes every breath count.
The race kicks off at 9 a.m., providing a single aid station at the turnaround point for refueling before the return journey. This timing places it strategically within the Leadville Race Series weekend, occurring the day after the Leadville Trail 100 MTB and a week before the 100-mile run.
What sets this event apart is its authentic connection to ultra-running history. Participants literally run in the footsteps of legends, experiencing the same unforgiving landscape that has made Leadville a pilgrimage site for serious trail runners. The post-race awards ceremony at 11:30 a.m. celebrates the tight-knit trail running community that defines Leadville events.
For many, the 10K serves as reconnaissance for future attempts at the full 100-miler, offering invaluable insight into what makes the Race Across the Sky so formidable.
Strambecco For the Love of Living
Strambecco is your guide to the world's best outdoor experiences — from epic gran fondos to backcountry ski adventures. We curate the events, share the stories, and connect you with the community.
Learn More