Windsor Marathon

Windsor, CO, USA • October 4, 2026

Race Day Weather

46°

69° high

Breezy

Dry

Cool morning, warming afternoon

Runners will face a temperature increase from 46°F to 69°F, with average humidity at 54% and a dew point of 38°F. Wind will be moderate at 9 mph from the SE, with gusts up to 35 mph. As the day warms, runners should consider pacing conservatively in the early miles to manage the heat.

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Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

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Pace

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Weather Adj.

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Common Goals:

Starting and ending at The Island at Pelican Lakes in Water Valley, with a great after party including food, drinks, music, kids zone and more in Windsor, Colorado. There's a distance for everyone with a kids fun run, 5k, 10k, half and full marathon. Source

Course Map

FAQ

When is the 2026 Windsor Marathon?

The 2026 Windsor Marathon will be held on Sunday October 4, 2026.

Historical Weather

Based on 5 years of data

Avg Temp

69°F

L:43° H:70°

RunScore

Conditions

Rain Freq

0 of 5 yrs

Wind6mph

Dew32°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Windsor Marathon Partly cloudy throughout the day with late afternoon rain. 2025	42°/66°	-	42°
2024 Windsor Marathon Clear conditions throughout the day. 2024	44°/70°	-	31°
2023 Windsor Marathon Clear conditions throughout the day. 2023	44°/77°	-	34°
2022 Windsor Marathon Clear conditions throughout the day. 2022	41°/71°	-	34°
2021 Windsor Marathon Partly cloudy throughout the day. 2021	46°/66°	-	31°