Colfax Marathon

Runners will face a start temperature of 44°F, gradually rising to 62°F by the finish. With light winds, conditions are favorable for pacing, but runners should be prepared for a warm-up in the late race. The gently rolling course will be more challenging at mile 7 with a 100ft climb, so a conservative start is advised, especially as temperatures rise.

Race day forecast available in 180 days

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Distance: 26.2mi

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Race Info

The Colfax Marathon (previously known as the Colorado Colfax Marathon) is an annual marathon foot-race held in Colorado, United States, since 2006. Significant portions of the course follow Colfax Avenue. Wikipedia

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Race weekend

Saturday, May 15

9:00 AM5K (3.1 mi)

Sunday, May 16

6:00 AMMarathon (26.2 mi)

6:30 AMHalf Marathon (13.1 mi)7:45 AM10M (10.0 mi)

FAQ

When is the 2027 Colfax Marathon?

The 2027 Colfax Marathon will be held on Sunday May 16, 2027.

Is the Colfax Marathon a Boston Marathon Qualifier?

Yes, the Colfax Marathon is an official Boston Marathon qualifier.

What is the time limit for the Colfax Marathon?

The time limit for the Colfax Marathon is 6 hours.

What will the weather be like for the 2027 Colfax Marathon?

The forecast calls for a high of 69°F and a low of 43°F with a 9% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 20 years of data

Avg Temp

51°F

L:44° H:59°

RunScore

Conditions

Rain Freq

1 of 20 yrs

Wind7mph

Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Colfax Marathon Partly cloudy throughout the day with afternoon rain. 2026	51°/60°	-	40°
2025 Colfax Marathon Partly cloudy throughout the day with rain. 2025	45°/57°	-	41°
2024 Colfax Marathon Partly cloudy throughout the day. 2024	55°/73°	-	42°
2023 Colfax Marathon Partly cloudy throughout the day. 2023	48°/64°	-	42°
2022 Colfax Marathon Partly cloudy throughout the day. 2022	49°/64°	-	34°
2021 Colfax Marathon Clear conditions throughout the day. 2021	35°/57°	-	16°
2019 Colfax Marathon Partly cloudy throughout the day. 2019	37°/45°	-	35°
2018 Colfax Marathon Cloudy skies throughout the day. 2018	41°/46°	-	41°
2017 Colfax Marathon Becoming cloudy in the afternoon with late afternoon rain. 2017	40°/57°	-	33°
2016 Colfax Marathon Partly cloudy throughout the day. 2016	40°/50°	-	35°
2015 Colfax Marathon Partly cloudy throughout the day. 2015	45°/59°	-	32°
2014 Colfax Marathon Partly cloudy throughout the day. 2014	50°/70°	-	42°
2013 Colfax Marathon Partly cloudy throughout the day. 2013	48°/61°	-	35°
2012 Colfax Marathon Partly cloudy throughout the day. 2012	42°/60°	-	43°
2011 Colfax Marathon Cloudy skies throughout the day. 2011	34°/37°	Light	33°
2010 Colfax Marathon Partly cloudy throughout the day. 2010	38°/53°	-	38°
2009 Colfax Marathon Partly cloudy throughout the day. 2009	47°/67°	-	36°
2008 Colfax Marathon Partly cloudy throughout the day. 2008	48°/72°	-	36°
2007 Colfax Marathon Partly cloudy throughout the day. 2007	51°/68°	-	43°
2006 Colfax Marathon Partly cloudy throughout the day. 2006	31°/53°	-	26°

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