Ultra Running Hub Colorado, United States · Date TBA
100 mi
Leadville Trail 100
161 km Distance
4,800 m Climbing
10.0 Grit · Elite / extreme
What the course asks
Climbing rate 30 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With mountain terrain, choose a shoe with aggressive lugs (5mm+) for optimal performance.
For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.
Gear for this race
Chosen for 161 km of mountain with 4,800 m of ascent.
- Trail Running Shoes30 m of climb per kilometre — grip and rock protection before cushioning.
- Race NutritionPast 161 km the palate quits before the legs do — carry more than one flavour.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles4,800 m of ascent to walk up.
- Headlamps161 km almost certainly means running into the night.
About
The Race Across the Sky, an out-and-back through the Colorado Rockies at extreme altitude.
Highlights
- Minimum 3000m elevation
- Hope Pass (3840m) twice
- Race Across the Sky