The 2025 event has concluded.

Colorado Marathon

Fort Collins, CO, USA • May 4, 2025
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clear-day Clear conditions throughout the day.

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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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When is the 2025 Colorado Marathon?

The 2025 Colorado Marathon will be held on Sunday May 4, 2025.

Is the Colorado Marathon a Boston Marathon Qualfier?

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

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Historical Weather & Results

RunScore
Run Score: 8
Temp
64°F
Min/Max
44°/64°F
Dew
31°F
Days of Rain
2/17
Wind
9mph
Tap a row for details.
YearLow / HighRain

Colorado Marathon 2024 Weather History

Clear conditions throughout the day.

2024
clear-day
40°/ 60°-
Run Score: 9

Colorado Marathon 2023 Weather History

Partly cloudy throughout the day with afternoon rain.

2023
partly-cloudy-day
48°/ 67°Light
Run Score: 8

Colorado Marathon 2022 Weather History

Becoming cloudy in the afternoon with late afternoon rain.

2022
clear-day
39°/ 64°-
Run Score: 8

Colorado Marathon 2021 Weather History

Clear conditions throughout the day.

2021
clear-night
39°/ 67°-
Run Score: 8

Colorado Marathon 2019 Weather History

Clear conditions throughout the day.

2019
clear-day
50°/ 72°-
Run Score: 9

Colorado Marathon 2018 Weather History

Clear conditions throughout the day.

2018
clear-day
50°/ 74°-
Run Score: 8

Colorado Marathon 2017 Weather History

Clear conditions throughout the day with afternoon rain.

2017
clear-day
54°/ 82°-
Run Score: 8

Colorado Marathon 2016 Weather History

Partly cloudy throughout the day with rain or snow clearing later.

2016
rain
35°/ 43°Light
Run Score: 7

Colorado Marathon 2015 Weather History

Clear conditions throughout the day.

2015
clear-day
47°/ 75°-
Run Score: 8

Colorado Marathon 2014 Weather History

Clear conditions throughout the day.

2014
clear-day
50°/ 83°-
Run Score: 8

Colorado Marathon 2013 Weather History

Partly cloudy throughout the day.

2013
clear-day
36°/ 59°-
Run Score: 8

Colorado Marathon 2012 Weather History

Becoming cloudy in the afternoon with late afternoon rain.

2012
clear-day
48°/ 60°-
Run Score: 8

Colorado Marathon 2011 Weather History

Becoming cloudy in the afternoon.

2011
clear-day
36°/ 51°-
Run Score: 8

Colorado Marathon 2010 Weather History

Partly cloudy throughout the day.

2010
cloudy
48°/ 63°-
Run Score: 9

Colorado Marathon 2009 Weather History

Partly cloudy throughout the day with early morning rain.

2009
partly-cloudy-day
43°/ 55°-
Run Score: 8

Colorado Marathon 2008 Weather History

Becoming cloudy in the afternoon.

2008
clear-day
44°/ 67°-
Run Score: 9

Colorado Marathon 2007 Weather History

Partly cloudy throughout the day.

2007
cloudy
39°/ 53°-
Run Score: 8
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR