The 2025 event has concluded.

Colorado Fall Equinox Marathon

Fort Collins, CO, USA • September 14, 2025
TopDescriptionCourseCommunity
Register

Subscribe

Get updates on the Colorado Fall Equinox 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.

rain Partly cloudy throughout the day with rain clearing later.

Catch up on your reading on the run with Audible Plus. Start your free trial..When you buy through our links, we may earn a commission.

One of the best races in Colorado! Enjoy the Wild & Scenic beauty of the Poudre River Canyon on a point-to-point downhill course. Source

Area Map

Course Maps

FAQ

Ask a Question about the Colorado Fall Equinox Marathon

Racecast Concierge (free during beta)

Ask a question about the Colorado Fall Equinox 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 Fall Equinox Marathon and general racecast.io updates.

When is the 2025 Colorado Fall Equinox Marathon?

The 2025 Colorado Fall Equinox Marathon will be held on Sunday September 14, 2025.

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
73°F
Min/Max
51°/73°F
Dew
43°F
Days of Rain
1/5
Wind
8mph
Tap a row for details.
YearLow / HighRain

Colorado Fall Equinox Marathon 2024 Weather History

Partly cloudy throughout the day with rain clearing later.

2024
rain
48°/ 59°Light
Run Score: 8

Colorado Fall Equinox Marathon 2023 Weather History

Clear conditions throughout the day.

2023
clear-day
48°/ 80°-
Run Score: 8

Colorado Fall Equinox Marathon 2022 Weather History

Clear conditions throughout the day.

2022
clear-day
53°/ 75°-
Run Score: 9

Colorado Fall Equinox Marathon 2021 Weather History

Clear conditions throughout the day.

2021
clear-day
64°/ 83°-
Run Score: 8

Colorado Fall Equinox Marathon 2019 Weather History

Clear conditions throughout the day.

2019
partly-cloudy-day
43°/ 69°-
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