Colorado Fall Equinox Marathon

Fort Collins, CO, USA · September 20, 2026
partly-cloudy-day45°·65° high·Light·Rain possible
8
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Race Day Weather

partly-cloudy-day
45°at start
66° high
Breezy
Rain possible

Cool start, warming afternoon

Runners will face a temperature increase from 48°F at the start to a warm 67°F by the finish, with average humidity at 51%. Winds will be light, mainly crosswinds, with occasional tailwinds during key segments, especially from miles 11 to 19. To optimize performance, runners should consider starting conservatively and adjusting their pace as temperatures rise, particularly during the challenging climbs and descents.

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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 66°F and a low of 45°F with a 48% 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