Windsor Marathon

Windsor, CO, USA · October 3, 2027
partly-cloudy-day48°·67° high·Light·Dry
8
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Windsor Marathon race day weather

partly-cloudy-day
48°at start
75° high
Light
Dry
Your goal
0:00:00

Chilly start, warming up, adjust pace

Runners will face a temperature increase from 48°F at the start to 67°F at finish, with low humidity at 47%. Light SSE winds at 6 mph will offer a tailwind in the early miles but shift to headwinds around miles 13 and 20. To manage the warming conditions, runners should start conservatively and stay hydrated, especially through the challenging climbs around mile 14.

Race day forecast available in 312 days
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Pace Calculator

26.2mi
0:00:00
HH:MM:SS
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Enter a finish time to see what race day does to it.

Common Goals:

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Windsor Marathon route and elevation

The Windsor Marathon course has about 540 ft (165 m) of climbing and 541 ft (165 m) of descent, and finishes near the elevation it starts. It is hillier than 75% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 14, with 165 ft (50 m) of climbing and a 2.9% average grade.

Biggest climbs

  • Miles 3 to 7.2: climbs about 50 ft (16 m).
  • Miles 13.4 to 17: climbs about 225 ft (69 m).
  • Miles 18.2 to 20.1: climbs about 90 ft (27 m).

What the hills cost

  • 3:30 on a flat course is about 3:32 here (2 minutes slower).
  • 4:00 on a flat course is about 4:02 here (2 minutes slower).
  • 4:30 on a flat course is about 4:32 here (2 minutes slower).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Windsor Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
118 ft11 ft8:009:0810:17
219 ft19 ft7:569:0510:13
318 ft26 ft7:559:0210:10
417 ft12 ft7:599:0810:16
514 ft9 ft7:599:0710:16
631 ft6 ft8:099:1910:28
716 ft24 ft7:549:0210:10
839 ft32 ft8:019:0910:18
918 ft6 ft8:029:1210:20
104 ft14 ft7:559:0210:10
117 ft5 ft7:579:0610:14
1215 ft5 ft8:029:1010:19
139 ft19 ft7:549:0210:10
14165 ft11 ft9:1710:3711:56
1519 ft15 ft7:589:0610:15
1652 ft17 ft8:159:2610:36
1730 ft7 ft8:089:1710:28
1814 ft69 ft7:448:509:56
1971 ft52 ft8:069:1610:25
2045 ft12 ft8:139:2310:34
2112 ft45 ft7:498:5610:03
2238 ft14 ft8:089:1810:28
236 ft66 ft7:438:499:55
2421 ft56 ft7:498:5610:02
2516 ft120 ft7:348:399:44
2613 ft55 ft7:478:5410:00
Last 0.25 ft5 ft1:462:012:17

Explore the Windsor Marathon course with the weather and your pace along the route, or compare it with other races.

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

About the Windsor Marathon

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)

Windsor Marathon FAQ

When is the 2027 Windsor Marathon?

The 2027 Windsor Marathon will be held on Sunday October 3, 2027.

What will the weather be like for the 2027 Windsor Marathon?

The forecast calls for a high of 76°F and a low of 47°F with a 3% chance of rain.

What is the elevation gain of the Windsor Marathon?

The Windsor Marathon course has about 540 ft (165 m) of climbing and 541 ft (165 m) of descent, and finishes near the elevation it starts.

Is the Windsor Marathon hilly?

Yes. It has about 21 ft (6 m) of climbing per mile. The hardest mile is mile 14, with 165 ft (50 m) of climbing and a 2.9% average grade. 4:00 on a flat course is about 4:02 here (2 minutes slower). It is hillier than 75% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Windsor Marathon?

Over the 6 years racecast.io has race-day weather for (2021 to 2026), it averaged 44°F at the start and 63°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Windsor Marathon?

Of the 6 years on record, 2023 was the warmest, reaching 68°F during race hours. The coldest start was 2022, at 42°F.

What was the windiest Windsor Marathon?

Of the 6 years on record, 2021 was the windiest, with wind averaging 7 mph during race hours. The calmest was 2022, at 1 mph.

Windsor Marathon weather history

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