2025 CKF Leadville Trail 100 MTB

About the Event

This is it: the race of all races. One hundred miles across the high-altitude, extreme terrain of the Colorado Rockies, this event was created for only the most determined athletes. Starting at 10,152 feet and climbing to 12,424 feet, you’ll be challenged to catch your breath—while the views try to take it away.

The Chris Klug Foundation (CKF) has been a charity partner with Lifetime since 2012, raising over $250,000+ for CKF's programs. CKF's Leadville Trail 100 charity team helps to educate others on the facts of organ, eye & tissue donation, while raising awareness for the those awaiting a lifesaving transplant nationwide.

Races Offered

2026 CKF Leadville Trail 100 MTB

Aug 15, 2026

straighten

Distance — 100 Miles

terrain

Type — —

timer

06:30

sell

$0.00

2026 CKF Leadville Trail 100 MTB - Extended No House

Aug 15, 2026

straighten

Distance — 2026 CKF Leadville Trail 100 MTB - Extended No House

terrain

Type — —

timer

06:30

sell

$0.00

2026 CKF Leadville Trail 100 MTB - Extended With House

Aug 15, 2026

straighten

Distance — 2026 CKF Leadville Trail 100 MTB - Extended With House

terrain

Type — —

timer

06:30

sell

$0.00

Weather History

These values represent the 3-year monthly averages for August in Leadville.

thermostat Temperature

4.4° / 20.0°

wb_sunny Feels like

2.3° / 16.6°

light_mode Avg sunshine hours

12h 29m

water_drop Avg rainfall

1.3 mm

ac_unit Avg snowfall

—

air Avg wind speed

5.0 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

High (7.0)

humidity_mid Humidity

61.5%

wb_twilight Sunrise

06:19

nightlight Sunset

19:58

About Leadville

Learn more about the host city, Leadville.

Leadville is a city in Lake County, Colorado that is about tourism, especially outdoor recreation. In the winter, multiple ski areas are within driving distance. In the summer, hikes abound. The Continental Divide Trail and the Colorado Trail pass near enough to Leadville that through hikers can rest and receive supplies here.