Running
Marathon
42.2 km
Cigna Denver Colfax Marathon
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Road runs in United States, Denver
Distances
Running
Marathon Relay
42.2 km
Running
Half Marathon
21.1 km
Running
Urban 10 Miler
16.1 km
Running
5K
5 km
Start: May 17, 09:00 AM
About
The Cigna Denver Colfax Marathon is a two-day festival with eight races, featuring the iconic Colfax Avenue corridor through downtown Denver and the City Park finish. It is the largest marathon weekend in the Rocky Mountain region.
Catering & aid stations
On-course aid stations/Verpflegung along the course; not Pacemaker lines (dietary needs and on-course refreshment stands detailed in participant info).
Pacers
Pacer Pacemaker information is not currently available in the source materials; see official participant pages for target times per start wave.
Results
View official resultsSurface mix
- 100% asphalt
Typical weather in Denver
Monthly averages based on historical data (2000–present).
Jan41°17°
↑ 07:20
↓ 16:59
Feb43°17°
↑ 06:54
↓ 17:36
Mar53°25°
↑ 07:11
↓ 19:08
Apr60°33°
↑ 06:22
↓ 19:38
May69°43°
↑ 05:46
↓ 20:08
Jun82°54°
↑ 05:32
↓ 20:30
Jul88°61°
↑ 05:45
↓ 20:28
Aug85°59°
↑ 06:13
↓ 19:57
Sep78°51°
↑ 06:42
↓ 19:09
Oct64°38°
↑ 07:11
↓ 18:21
Nov51°26°
↑ 06:46
↓ 16:45
Dec42°18°
↑ 07:15
↓ 16:37
What's included in entry
- Race bib
- Event T-shirt
- Raffle ticket for awards
- Finisher medal
- Post-race festival with food & beverage in City Park
Last updated: Jun 5, 2026, 11:51:38 PM
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