Windsor Marathon

Windsor, CO, USA · October 4, 2026
clear-day49°·66° high·Light·Dry
8
Register

Race Day Weather

clear-day
49°at start
80° high
Light
Dry
Your goal
0:00:00

Cool start, warm finish ahead

Runners will face a temperature rise from 49°F at the start to a warm 77°F by the finish. Humidity will be moderate at 59%, with light winds peaking at 5 mph, generally favoring tailwind segments. Adjust pacing conservatively during the early miles as temperatures climb, particularly around the notable 157ft climb at mile 14 where heat can be felt more intensely. Hydration will be crucial, especially in the later stages from miles 20-23 where headwinds may also add to fatigue.

partly-cloudy-night10
clear-night10
clear-day10
clear-day10
clear-day8
clear-day7
clear-day6
clear-day5
clear-day5
clear-day4
clear-day4

Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Windsor Marathon

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 80°F and a low of 49°F with a 2% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
52°F
L:43° H:63°
RunScore
9
Conditions
Rain Freq
0%
0 of 5 yrs
Wind5mph
Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
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