

About the event
On June 28, 2025, the Leadville Heavy Half Marathon takes runners on a 15.46-mile course through the historic mining districts of Leadville, Colorado. With 1,043 meters of elevation gain, the route features steep climbs and technical trails, culminating in a breathtaking summit at Mosquito Pass, 13,185 feet above sea level. Designed for runners who crave high-altitude challenges, this event blends scenic beauty with rugged terrain. Organized by Life Time, Inc., the Heavy Half is an unforgettable experience for those seeking a shorter yet equally rewarding version of the iconic Leadville races.
Date:
Sat
Jun 28
2025
Location:
Distance:
Elevation profile:
Hilly
Website:
LinkElevation gain:
Number of participants:
Find the best training plan for your goals and the distance you’re planning to run:
Stories from Runnas
Take your running to the next level
The Leadville Heavy Half Marathon, taking place on June 28, 2025, spans 15.46 miles with an elevation gain of 1,043 meters, offering a rewarding challenge for trail enthusiasts. This high-altitude race includes a climb to 13,185 feet at Mosquito Pass, promising stunning views and a sense of accomplishment.
If you are an official race organiser with any questions about this page, please get in touch: races@runna.com
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