The 2026 Windsor Marathon has concluded.Share your finish

Windsor Marathon

Race complete
Windsor, CO, USA · October 4, 2026·
clear-day45°·66° high·Light·Dry
8
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Race Day Weather

clear-day
45°at start
80° high
Light
Dry
Your goal
0:00:00

Cool start, warming trend ahead

Runners will face a temperature rise from 45°F at the start to a warm 78°F by the finish. With light winds at 5 mph shifting from tailwind to headwind, pacing adjustments will be essential, especially during the tougher headwind segments around miles 10, 13-14, and 20. Given the average humidity of 58%, hydration frequency should increase as the race progresses into warmer conditions.

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clear-night10
clear-day10
clear-day10
clear-day8
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clear-day5
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clear-day4

Pace Calculator

26.2mi
0:00:00
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Common Goals:

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We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Windsor Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

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

Race weekend

Sunday, October 4
7:00 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)8:30 AM10K (6.2 mi)
8:45 AM5K (3.1 mi)
10:00 AM1 Mile Fit & Fun Run (1.0 mi)

FAQ

When is the 2026 Windsor Marathon?

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

What will the weather be like for the 2026 Windsor Marathon?

The forecast calls for a high of 81°F and a low of 45°F with a 0% chance of rain.

Historical Weather

Based on 6 years of data
Avg Temp
52°F
L:44° H:63°
RunScore
9
Conditions
Rain Freq
0%
0 of 6 yrs
Wind5mph
Dew37°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
45°/66°-
8
2025
partly-cloudy-night
43°/60°-
9
2024
clear-night
43°/60°-
10
2023
clear-night
43°/68°-
9
2022
clear-night
41°/64°-
9
2021
partly-cloudy-night
46°/61°-
10