American Heroes Run

Longmont, CO, USA · September 12, 2026
partly-cloudy-day61°·83° high·Breezy·Dry
8
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Weather
Course
FAQ
History

Race Day Weather

partly-cloudy-day
61°at start
84° high
Breezy
Dry

Cool start, warming quickly

Runners will face a temperature rise from 57°F at the start to a peak of 84°F. Winds will be light from the SW at 10 mph, with gusts up to 21 mph. Adjusting pace early is crucial as humidity remains moderate; staying hydrated is key for optimal performance.

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partly-cloudy-day8
partly-cloudy-day7
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Race Info

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When is the 2026 American Heroes Run?

The 2026 American Heroes Run will be held on Saturday September 12, 2026.

What will the weather be like for the 2026 American Heroes Run?

The forecast calls for a high of 84°F and a low of 57°F with a 28% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
80°F
L:51° H:80°
RunScore
7
Conditions
Rain Freq
20%
1 of 5 yrs
Wind5mph
Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2025 American Heroes Run

Clear conditions throughout the day.

2025
clear-day
45°/78°-
8

2024 American Heroes Run

Clear conditions throughout the day.

2024
clear-day
51°/86°-
8

2023 American Heroes Run

Clear conditions throughout the day.

2023
clear-day
55°/86°-
8

2022 American Heroes Run

Cloudy skies throughout the day with rain.

2022
cloudy
49°/54°Light
9

2021 American Heroes Run

Clear conditions throughout the day.

2021
clear-day
55°/97°-
7

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