Life Time Leadville Race Series Kicks Off June 28

The 2025 Life Time Leadville Race Series starts June 28 with five weekends throughout the summer months for runners and cyclists from around the globe to compete on the trails and terrain of Leadville, Colorado.

The Leadville Race Series began in 1983 with 45 runners and a 100-mile trek through the Rocky Mountains. It is since become a world-renowned event series and this year, nearly 8,000 athletes plus spectators, support crews and media will experience Leadville.

The series starts June 28 with the Leadville Trail Marathon and Heavy Half, which takes runners to the highest point of any Leadville Race Series event: Mosquito Pass at 13,185 feet at its highest point, with an elevation gain of more than 6,000 feet. Reaching the same high point, the Heavy Half is 15.4 miles, with an elevation gain of nearly 3,500 feet. The Leadville Trail Marathon serves as a qualifier for the Leadville Trail 100 Run.

On July 12–13, the Silver Rush 50 Run and Leadville Silver Rush 50 MTB will take place with running on the first day before cycling. With 8,000 feet of elevation gain, the 50-mile run and MTB races both act as qualifying events for the Leadville Trail 100s. Participating in both 50-mile Silver Rush events gives athletes the opportunity to claim the title of Silver King and Silver Queen. In addition to the 50-mile races, the weekend boasts a 15-mile run and MTB races, as well as a 5K juniors run.

The Leadville Stage Race will be July 25–27 with a 100-mile race qualifier for the Leadville Trail 100 MTB, broken up over three days of racing. The stages include 40 miles, 22 miles and 41 miles, each with more than 4,000 feet of elevation gain.

The third stop for the Life Time Grand Prix, the August 9–10 Life Time Leadville Trail 100 MTB features steep and technical ascents and descents, including the Columbine and Powerline sections, and an elevation gain of over 12,000 feet. Following one of the longest events, the weekend rounds out with the shortest race of the Series, the Life Time Leadville Trail 10K.

The Leadville Trail 100 Run on August 16 is one of the oldest and most iconic endurance running events in the world, and the event that started the Leadville Race Series. The ultramarathon features the climbs of Powerline, high-altitude passes like Hope Pass and technical terrain on the Colorado Trail, all amounting to over 15,000 feet of elevation gain, most of which is experienced at an altitude of over 10,000 feet.

This year, 120 athletes will line up for five of the Series’ events – the Leadville Trail Marathon, a Silver Rush 50 event, the Leadville Trail 100 MTB, the Leadville 10K and the Leadville Trail 100 Run – in hopes of finishing and claiming the title of Lead Challenge finisher covering 282.4 miles.