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Leadville Trail 100 Run

Quick facts

Distance Ultra marathon

About Leadville Trail 100 Run

Race co-founder Kenneth Chlouber, an avid marathon runner, conceived of the race as a way to make Leadville famous and bring visitors during a period of economic downturn. The Blueprint for Athletes Leadville Race Series began in 1983 with just 45 runners making the epic 100-mile trek through rugged Rocky Mountain terrain. Today, the world-renowned series stretches from New York to California and hosts thousands of racers on foot and in the saddle. Year after year, endurance athletes from all over the world test their grit, guts and determination with the ultimate goal of “Racing Across the Sky” and earning the coveted silver and gold buckle. 

The Leadville Trail 100 Run (aka The Race Across The Sky or the LT100) is an ultramarathon held annually on trails and dirt roads near Leadville, Colorado, through the heart of the Rocky Mountains. Runners in the race climb and descend 15,600 feet (4,800 m), with elevations ranging between 9,200–12,620 feet. In most years, fewer than half the starters complete the race within the 30-hour time limit.


Leadville Trail 100 Run

  • 160.934km



Alps Motel, Columbine Inn & Suites, Copper Mountain Resort, Delaware Hotel, Grand West Resort, Leadville Hostel & Inn

After Race Services

Awards Ceremony

Aid Stations

There are 11 well-stocked aid stations along the course.The following items will be available at the aid stations: Gu gel packs, Herbalife Prolong, Coca-Cola product, Water, Coffee, Fruit (bananas, oranges, watermelon),Turkey & ham, Bagels, Boiled potatoes, Cocoa,Top Ramen-type soup/hot bouillon, Cookies, M&Ms, Pretzels, Soda crackers, Graham crackers, Peanut butter & jelly

Award Medals

Runners finishing before the 25-hour cutoff will be awarded the large silver and gold trophy buckles. Runners finishing before the 30-hour cutoff but after the 25-hour cutoff will be awarded the small silver and gold trophy buckles.

Equipment Storage

All aid stations, with the exception of Hope Pass, Supply Bag drops.

Maximum Time

30 hrs


All Day Parking High school and Middle School and at marked public lots. Also, 4-Hour Parking in Public lots on 3rd and Harrison.


Pre-race Carbo-Loading Dinner.


Chip Timing

Leadville Trail 100 Run Route Map

Leadville Trail 100 Run Route Map


Corner of 6th & Harrison





National Mining Hall of Fame & Museum

Leadville, Colorado & Southern Railroad

Twin Lakes

Mount Elbert

Mosquito Pass

Columbine Mine

The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.