9 running, mountain biking, and ultra events in Leadville, Colorado

From big races to Saturday morning group runs—find running, mountain biking, and ultra events and connect with the local endurance sports community.

• Turquoise Lake Road & Trail Run [finishers.com] - Facebook
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  Wed, Jun 03, 2026

  Run Trail

  Leadville, Colorado, United States
  OpenStreetMap Google Maps
• Leadville Trail Marathon [leadvilleraceseries.com]
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  Sun, Jun 28, 2026

  24.78k 42.49k Marathon Run

  148 West 4th Street, Leadville, Colorado, 80461, United States
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• Leadville Firecracker 5K [leadvillesportshall.com] [Register at ultrasignup.com]
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  Sat, Jul 04, 2026 at 8:30 AM

  5k

  West 5th And Harrison Ave., Leadville, Colorado, 80461, United States
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• Leadville Silver Rush 50 [leadvilleraceseries.com]
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  Sat, Jul 11, 2026

  15 Miles 50 Miles Run

  400 Harrison Avenue, Leadville, Colorado, 80461, United States
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• TransRockies Run - Pass to Pub [transrockies-run.com] [Register at ultrasignup.com] - Facebook
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  Sun, Jul 19, 2026

  Run Ultra

  Leadville, Colorado, United States
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• Boom Days Pack Burro Race [finishers.com]
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  Sun, Aug 02, 2026

  Run

  Leadville, Colorado, United States
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• 2026 CKF Leadville Trail 100 MTB [leadvilleraceseries.com] [Register at runsignup.com]
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  Sat, Aug 15, 2026 at 6:30 AM

  Description

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  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...

  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.

  100 Miles Mountain Biking Trail

  316 Harrison Ave, Leadville, Colorado, 80461, United States
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• Leadville Trail 100 Mile Run [leadvilleraceseries.com]
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  Sat, Aug 22, 2026

  100 Miles Run

  148 West 4th Street, Leadville, Colorado, 80461, United States
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• Leadville Trail 100 Run [finishers.com] - Facebook - Instagram
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  Tue, Sep 15, 2026

  Description

  🗺 Leadville Trail 100 Run is a must-attend event to mark on your race calendar in the United States 🇺🇸 in Leadville.

  Run Trail

  Leadville, Colorado, United States
  OpenStreetMap Google Maps