Windsor Marathon

Windsor, CO, USA · October 4, 2026

48°·69° high·Breezy·Dry

Weather

Race Day Weather

48°at start

69° high

Breezy

Dry

Cool start, warming up

Runners will face a temperature rise from 46°F at the start to a maximum of 69°F. Winds will be light at 9 mph from the SE, with gusts reaching 35 mph. With humidity at 54% and no rain expected, runners should maintain a steady pace and stay hydrated as temperatures climb.

Race day forecast available in 137 days

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

—

Weather Adj.

—

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 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

Website

Course Map

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 69°F and a low of 46°F with a 0% chance of rain.

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°

More CO Races

Boulder Boulder

2026-05-25 · Boulder, CO, USA

Steamboat Marathon

2026-06-07 · Steamboat Springs, CO, USA

Estes Park Marathon

2026-06-21 · Estes Park, CO, USA

Leadville Trail Marathon

2026-06-27 · Leadville, CO, USA

Hardrock 100

2026-07-10 · Silverton, CO, USA

Aspen Valley Marathon

2026-07-25 · Basalt, CO, USA

Free guidesMarathon Fueling Guide·Carb Loading Guide·Race Morning Guide·Race Day Gear Guide·Pacing Strategy Guide·Mental Strategy Guide