Marathon · Colorado
Marathons in Colorado
Every marathon we track across Colorado, sorted by date. Each card shows deterministic 0–100 scores for beginner-friendliness, PR potential, value, vibe, and family appeal.
Marathon
Sun, May 17, 2026
Denver, Colorado
road
Rolling
60PR40value45vibe
Marathon
Sat, May 23, 2026
Woodland Park, Colorado
trail
Rolling
30PR40value45vibe
Marathon
Sun, May 24, 2026
Aspen, Colorado
road
Rolling
60PR50value65vibe
charity
Marathon
Sat, Jun 6, 2026
Durango, Colorado
road
Rolling
60PR40value55vibe
scenic
Marathon
Sun, Jun 7, 2026
Steamboat Springs, Colorado
road
Rolling
60PR40value55vibe
scenic
Marathon
Sun, Aug 2, 2026
Denver, Colorado
road
Rolling
60PR40value45vibe
Marathon
Sat, Aug 22, 2026
Pine, Colorado
road
Rolling
60PR40value45vibe
Marathon
Sun, Sep 20, 2026
Manitou Springs, Colorado
road
Rolling
60PR40value45vibe
Marathon
Sat, Oct 3, 2026
Colorado Springs, Colorado
road
Rolling
60PR40value45vibe
Marathon
Sun, Oct 4, 2026
Windsor, Colorado
road
Rolling
60PR50value85vibe
music
scenic
charity
Marathon
Sat, Oct 10, 2026
Fort Collins, Colorado
road
Rolling
60PR40value55vibe
scenic
Marathon
Sun, Oct 11, 2026
Durango, Colorado
road
Rolling
60PR40value55vibe
scenic
Marathon
Sat, Oct 17, 2026
Fort Collins, Colorado
trail
Rolling
30PR40value55vibe
scenic
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Top metros in Colorado for marathons
Cities in Colorado with the most marathon races on the calendar.