2 events in Denver, Colorado

From big races to Saturday morning group runs—find marathon events and connect with the local endurance sports community.

• Denver Marathon [finishers.com] - Facebook
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  Sat, May 16, 2026

  5k 10k Half Marathon Marathon Run

  Denver, Colorado, United States
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• 2026 Denver Colfax Marathon [runcolfax.org]
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  Sun, May 17, 2026

  5k 21k 42k Marathon Run

  City Park, Denver, CO, USA
  Denver, Colorado, United States
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