Visit Leadville Twin Lakes

Copper Triangle Cycling Event
2026-08-01 06:00 - 17:00 (America/Denver) | Fremont Pass, Tennessee Pass and Vail Pass
Based at Copper Mountain Resort in the heart of the Rockies, the famous Copper Triangle is a cycling classic.
This road ride is graced with breathtaking scenery, gorgeous roads and three climbs over 10,000 feet. The 79-mile loop crests three Colorado mountain passes – Fremont Pass (Elev. 11,318’), Tennessee Pass (Elev. 10,424’) and Vail Pass (Elev. 10,662’) – for a total elevation gain of 6,500 feet.

Leadville Pack Burro Race
2026-08-09 10:00 | Downtown Leadville, Harrison Avenue, Leadville, CO, 80461, United States
The Leadville Boom Days Pack Burro Race takes places on Sunday morning of Boom Days.
Join us to cheer on the teams as they take off on Harrison Avenue and work their way up Leadville’s mining district on the East side.

Leadville 100 Mountain Bike Race
2026-08-15 | CO
In 1994, 150 gutsy riders braved 100 miles of high-altitude, extreme Rocky Mountain terrain — starting at 10,152 feet, climbing to 12,424 feet and pedaling into global cycling history. Today, the Life Time Leadville Trail 100 MTB is one of the most prestigious endurance cross-country MTB events in the world. Every year, a select handful of gritty and determined cyclists make the pilgrimage to Cloud City to Race Across the Sky and take their shot at etching their name among the Leadville Legendary. The red carpet awaits.

Leadville Trail 10K Run
2026-08-16 | CO
As the shortest race in the Leadville Race Series, the Leadville 10K Run offers runners a unique opportunity to experience the magic of Leadville from a less intimidating distance. Cast against Leadville’s breathtaking mountain backdrop, the 10K crosses the same gravel roads as the infamous LT100 RUN course, covering the first and final 3.1 miles of the Race Across the Sky. Dip your toes in the magic and step into the warm embrace of the Cloud City community, you’ll never look back.

Leadville Trail 100 Race
2026-08-22 - 2026-08-23 | CO
This is it. The Race of All Races. Where it all began.
In 1983, 45 tough-minded runners braved 100 miles of high-altitude, extreme Rocky Mountain terrain — starting at 10,200 feet, climbing to 12,500 feet and running into global endurance history. Today, the Life Time Leadville Trail 100 RUN presented by La Sportiva is one of the oldest, most storied endurance running events in the world — with not one, but two climbs on the crux of the course: Hope Pass (12,500 feet). Every year, a select handful of gritty, gutsy and determined runners make the pilgrimage to Cloud City to Race Across the Sky and take their shot at etching their name among the Leadville Legendary. The red carpet awaits.

Colorado High School Cycling League Race Weekend
2026-08-28 - 2026-08-30 | Dutch Henry – CMC Timberline Trails, Leadville, CO, 80461, United States
August 28th – 30th High School Race Events held on the Timberline Trails behind Colorado Mountain College.
This high-altitude course includes a mix of singletrack, doubletrack, and dirt roads that include portions of the Colorado Mountain College Leadville cross-country trail system and Lake County trails maintained by the Cloud City Wheelers.
The course is a 6.2 mile loop with 620 feet of climbing per lap. Running clockwise, the course starts and finishes at Colorado Mountain College Leadville. We are extremely grateful to Bruce Kelly and to Sterling Mudge of the Cloud City Wheelers for their course design and consultation.
Friday 2pm to 6:30pm
Saturday 7am to 6:30pm
Sunday 7am to 6:30pm
