Denver Colfax Marathon | Fun Run Atlas | RMN
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Monday, October 5, 2026 · New Jersey

Monday, October 5, 2026 · New Jersey

Denver Colfax Marathon

Courses run through Empower Field at Mile High (twice on the marathon), a full mile inside the Denver Zoo (half marathon), and Denver Fire Station #1.

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Fun Run Atlas · Colorado

Novelty course · Denver, CO

Denver Colfax Marathon is a fun run on a one-of-a-kind course in Denver, Colorado, with verified dates from May 15 through May 16, 2027.

ConfirmedFamily friendly
When
May 15–16, 2027
Mid-May weekend
Where
City Park (start/finish)
Denver, CO · Denver
Directions
Entry
Register
Organized by
Denver Colfax Marathon
Official siteDirectionsAdd to calendar

What to expect

  • zoo mile
  • stadium run-through
  • fire station run-through
  • relay
  • post-race party

2026 Season completed

Sunday, May 17, 2026

  • Sun, May 17, 2026

2027 Confirmed

5K Sat May 15; main race day Sun May 16, 2027

  • May 15–16, 2027

Checked Sun, Oct 4, 2026 against the official source.

About the run

Denver's marathon weekend: the marathon, half marathon, Urban 10 Miler and marathon relay run on Sunday, with a 5K kickoff on Saturday.

The run

Distances
Marathon, Half marathon, Urban 10 Miler, Marathon relay, 5K
Season
Spring
Field
About 25,000 (organizer claim)

Nearby

Sources

Details checked against the race’s own pages on Sun, Oct 4, 2026.