Colorado Fall Equinox Marathon

Fort Collins, CO, USA · September 20, 2026
partly-cloudy-day45°·69° high·Breezy·Dry
9
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Race Day Weather

partly-cloudy-day
45°at start
69° high
Breezy
Rain possible

Cool start, warming trend ahead

Runners will face a temperature increase from 45°F at the start to 69°F by the finish, with average humidity at 54%. A light tailwind will assist through various segments, particularly from miles 11-12 and 14-15. The rolling course will present challenges, especially during the significant climb from miles 2 to 5, urging runners to pace conservatively and stay hydrated as temperatures rise.

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Distance: 26.2mi
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Race Info

The Colorado Fall Equinox Marathon offers runners a breathtaking point-to-point course through the picturesque Poudre River Canyon, featuring a challenging initial ascent followed by a rewarding downhill stretch. Starting at Ohana Mountain Ranch, the marathon course winds through the Buckhorn and Poudre River Canyons, culminating in a scenic finish near Fort Collins. Runners are treated to stunning views of the Cache la Poudre River, Colorado's only designated Wild & Scenic River, and are celebrated with a festive post-race party complete with music, local brews, and food.

FAQ

When is the 2026 Colorado Fall Equinox Marathon?

The 2026 Colorado Fall Equinox Marathon will be held on Sunday September 20, 2026.

Is the Colorado Fall Equinox Marathon a Boston Marathon Qualifier?

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

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

The forecast calls for a high of 69°F and a low of 45°F with a 61% chance of rain.

Historical Weather

Based on 6 years of data
Avg Temp
72°F
L:52° H:72°
RunScore
8
Conditions
Rain Freq
33%
2 of 6 yrs
Wind8mph
Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
55°/66°Light
8
2024
rain
48°/59°Light
8
2023
clear-day
48°/80°-
8
2022
clear-day
53°/75°-
9
2021
clear-day
64°/83°-
8
2019
partly-cloudy-day
43°/69°-
8