The 2026 Colorado Marathon has concluded.Share your finish

Colorado Marathon

Race complete

Fort Collins, CO, USA · May 3, 2026

49°·74° high·Breezy·Dry

Race Day Weather

49°at start

75° high

Windy

Dry

Cool start, rising heat ahead

Runners will face a cool start at 43°F, gradually warming to 75°F by race end. Winds will start as a tailwind, switching to headwind after mile 14, peaking at 15 mph with gusts up to 26 mph. With low humidity at 21%, hydration will be essential, particularly during the warmer stretches, especially after mile 9 where significant descents occur. Adjust pacing conservatively early on to manage the increasing temperatures.

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Distance: 26.2mi

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0:00:00

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Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

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Race Info

Welcome to the Colorado Marathon, one of the most stunning races in the country! This annual marathon is held in the verdant Poudre Canyon, nestled in the picturesque Rocky Mountains, just outside of the beautiful city of Fort Collins. Source

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FAQ

When is the 2026 Colorado Marathon?

The 2026 Colorado Marathon will be held on Sunday May 3, 2026.

Is the Colorado Marathon a Boston Marathon Qualifier?

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

What will the weather be like for the 2026 Colorado Marathon?

The forecast calls for a high of 75°F and a low of 43°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 18 years of data

Avg Temp

64°F

L:44° H:65°

RunScore

Conditions

Rain Freq

11%

2 of 18 yrs

Wind10mph

Dew32°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Colorado Marathon Clear conditions throughout the day. 2025	43°/75°	-	38°
2024 Colorado Marathon Clear conditions throughout the day. 2024	40°/60°	-	39°
2023 Colorado Marathon Partly cloudy throughout the day with afternoon rain. 2023	48°/67°	Light	37°
2022 Colorado Marathon Becoming cloudy in the afternoon with late afternoon rain. 2022	39°/64°	-	27°
2021 Colorado Marathon Clear conditions throughout the day. 2021	39°/67°	-	34°
2019 Colorado Marathon Clear conditions throughout the day. 2019	50°/72°	-	32°
2018 Colorado Marathon Clear conditions throughout the day. 2018	50°/74°	-	43°
2017 Colorado Marathon Clear conditions throughout the day with afternoon rain. 2017	54°/82°	-	43°
2016 Colorado Marathon Partly cloudy throughout the day with rain or snow clearing later. 2016	35°/43°	Light	29°
2015 Colorado Marathon Clear conditions throughout the day. 2015	47°/75°	-	42°
2014 Colorado Marathon Clear conditions throughout the day. 2014	50°/83°	-	32°
2013 Colorado Marathon Partly cloudy throughout the day. 2013	36°/59°	-	27°
2012 Colorado Marathon Becoming cloudy in the afternoon with late afternoon rain. 2012	48°/60°	-	24°
2011 Colorado Marathon Becoming cloudy in the afternoon. 2011	36°/51°	-	18°
2010 Colorado Marathon Partly cloudy throughout the day. 2010	48°/63°	-	40°
2009 Colorado Marathon Partly cloudy throughout the day with early morning rain. 2009	43°/55°	-	41°
2008 Colorado Marathon Becoming cloudy in the afternoon. 2008	44°/67°	-	25°
2007 Colorado Marathon Partly cloudy throughout the day. 2007	39°/53°	-	33°