Race Across the Sky - Leadville 100 is a high-altitude monster starting at 10,200ft. The out-and-back course features climbs to 12,600ft and tests your ability to perform in thin air.
Rocky jeep roads, exposed alpine trails, and high mountain passes above treeline
Lottery + qualifier requirement
15,600 feet
15,600 feet
12,620ft
9,200ft
Elevation Range: 3,420 feet
Moderate climbing on Turquoise Lake trail. Runners must resist going too hard despite feeling good.
The gauntlet. Huge climbs over Hope Pass (12,600ft) and Twin Lakes. Altitude sickness is real.
Same terrain in reverse. Hope Pass is just as hard the second time. This is where races are won.
Final push around Turquoise Lake. Mostly runnable but you're exhausted at 10,000ft elevation.
Leadville is all about respecting altitude. Your normal pace means nothing here. Heart rate and breathing should dictate effort, not pace. Power hike all climbs and run the descents and flats conservatively to save energy for the return trip over Hope Pass.
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Get a personalized, segment-by-segment pacing plan for Leadville Trail 100 Run based on your goal time.
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