Colorado Marathon

Fort Collins, CO, USA • May 3, 2026
TopDescriptionCourseCommunity
Register

Subscribe

Get updates on the Colorado Marathon race forecast and be the first to know if the forecast shifts.

Text Updates

Maximum one update per day. Standard messaging rates apply. Currently only supports USA, UK, and Canada.

Phone Number

Email Updates

By submitting your email you agree to receive weather forecasts and racecast.io updates.

partly-cloudy-day Partly cloudy throughout the day.

350 lumens of light to illuminate the trail ahead. Black Diamond Spot 350 Headlamp.When you buy through our links, we may earn a commission.

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

Area Map

Course Maps

FAQ

Ask a Question about the Colorado Marathon

Racecast Concierge (free during beta)

Ask a question about the Colorado Marathon and we'll do the hard part and find the answer for you within 48 hours.

By using Racecast Concierge, you agree to receive email alerts pertaining to the Colorado Marathon and general racecast.io updates.

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 Qualfier?

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

Community

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

Historical Weather & Results

RunScore
Run Score: 8
Temp
64°F
Min/Max
44°/65°F
Dew
32°F
Days of Rain
2/18
Wind
10mph
Tap a row for details.
YearLow / HighRainResults

Colorado Marathon 2025 Weather History

Clear conditions throughout the day.

2025
clear-day
43°/ 75°-
Run Score: 8

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