United States · Road marathon · 42.195 km
Denver Colfax Marathon
Denver, Colorado, United States
Denver Colfax Marathon combines Colorado city roads and paved paths in a loop from City Park through downtown, Sloan’s Lake and Lakewood. The course passes through Denver Fire Station No. 1 and twice through Empower Field at Mile High, an unusual pair of detours for a morning run. Altitude, climbs and descents all belong in the pacing plan. General entry includes the option to support a charity partner; the six-hour limit and advance bib collection also need attention.
AthRecs race guide · Updated
Upcoming dates
Planning your race weekend? These are the announced dates through 2027. Follow the organiser’s link for the latest date and race-day details. All dates and start times are local.
At a glance
- City / location
- Denver
- State / district
- Colorado
- Distance
- 42.195 kilometres / 26.2 miles
- Surface
- Road and paved urban paths, with stadium passages
- Course profile
- Urban loop at altitude, with climbs and descents.
- Approximate field
- About 3,000 runnersReported starters · 2026
The Denver Clarion’s on-course report described almost 3,000 runners at the full-marathon start. This is a rounded report, not a festival attendance figure or an entry limit.
How to enter Denver Colfax Marathon
These are the organiser’s entry routes. Check the linked page for the edition, opening dates, eligibility, fees and current availability.
General entry
Enter the individual marathon through the organiser’s Race Roster registration page.
Official entry informationRun for a charity partner
Choose a participating nonprofit during registration, or add it to an existing entry. The charity contacts runners about its fundraising or awareness arrangements; this is an option within registration.
Official entry informationRoute and course
Starts and finishes in City Park, visiting downtown, Empower Field at Mile High, Sloan’s Lake and Lakewood.
Race-day planning
Check which edition each detail applies to before making your plans. Follow the linked instructions for the latest arrangements.
- 2027 start
- 06:00 local time, east side of Ferrill Lake in City Park. 2027 start information
- Course limit
- Six hours. Course limit information
- Bib collection
- Collect at the Friday or Saturday expo; there is no race-day packet collection. Bib collection information
Past races and results
Official results archiveOpen the organiser’s results to find a runner, club or published category standing. At festivals with several distances, select the marathon results.
2026 Denver Colfax Marathon
Full 2026 resultsColorado runners led both podiums in the 2026 full marathon. The Denver Clarion’s on-course report named Alec Hornecker and Hali Hafeman as the winners; the organiser’s archive links to the complete timed results and category standings.
Men
The Denver Clarion reported Alec Hornecker winning in 2:27:56, ahead of Ryan Montera and Patrick Keeley.
View result detailsWomen
The Denver Clarion reported Hali Hafeman winning in 2:55:26, followed by Emily Stoodley and Chelsea Factor.
View result detailsRace news, photos and video
Common questions
When is Denver Colfax Marathon?
Confirmed upcoming dates: 16 May 2027. Dates are local to the race.
How do I enter Denver Colfax Marathon?
General entry: Enter the individual marathon through the organiser’s Race Roster registration page. Run for a charity partner: Choose a participating nonprofit during registration, or add it to an existing entry. The charity contacts runners about its fundraising or awareness arrangements; this is an option within registration.
Where is Denver Colfax Marathon and how far is it?
Denver Colfax Marathon takes place in Denver, Colorado, United States. This guide covers the 42.195 km full marathon (26.2 miles). Surface: Road and paved urban paths, with stadium passages
What is the Denver Colfax Marathon course like?
Starts and finishes in City Park, visiting downtown, Empower Field at Mile High, Sloan’s Lake and Lakewood. Urban loop at altitude, with climbs and descents.
How big is the field at Denver Colfax Marathon?
The approximate field is About 3,000 runners, based on Reported starters for 2026. The Denver Clarion’s on-course report described almost 3,000 runners at the full-marathon start. This is a rounded report, not a festival attendance figure or an entry limit. Entrants, starters and finishers are different measures.
Where can I find past Denver Colfax Marathon results?
The past races and results section links to the organiser’s results. Select the distance and edition for participant searches and published category standings.
Sources and race information
AthRecs is independent of the race organiser. This guide brings together the linked race information, results and reports. Source review: . Historical details are labelled by edition; current entry availability and final instructions remain with the organiser.
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