The 2025 event has concluded.

Colorado Fall Equinox Marathon

Fort Collins, CO, USA • September 14, 2025
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rain Partly cloudy throughout the day with rain clearing later.

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When is the 2025 Colorado Fall Equinox Marathon?

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

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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