Colorado 10K

Fort Collins, CO, USA · May 2, 2027·
partly-cloudy-day36°·41° high·Light·Dry
10
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Colorado 10K race day weather

partly-cloudy-day
36°at start
55° high
Light
Dry
Your goal
0:00:00

Cold start — layer up, big temp swing, chance of rain

Runners will start in chilly 36°F conditions — dress in layers for the corral and plan to shed early. Temps will climb significantly to 55°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready.

Race day forecast available in 162 days
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Pace Calculator

6.2mi
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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 Colorado 10K 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 Colorado 10K

The Colorado Marathon's 10K is a 6.2-mile out-and-back course that starts and finishes near Washington Park in downtown Fort Collins. It follows the Poudre Trail past Fort Collins natural areas alongside the Cache la Poudre River, climbing to about 5,040 feet at the turnaround point before the downhill return to the finish.

Race weekend

Sunday, May 2
6:30 AMMarathon (26.2 mi)6:30 AMHalf Marathon (13.1 mi)
7:00 AM10K (6.2 mi)
7:00 AM5K (3.1 mi)
Area Map
Course Map

Colorado 10K FAQ

When is the 2027 Colorado 10K?

The 2027 Colorado 10K will be held on Sunday May 2, 2027.

What will the weather be like for the 2027 Colorado 10K?

The forecast calls for a high of 61°F and a low of 36°F with a 14% chance of rain. Check our detailed hourly forecast above for the best 10K race plan.

What is the weather usually like for the Colorado 10K?

Over the 19 years racecast.io has race-day weather for (2007 to 2026), it averaged 44°F at the start and 48°F by a typical finish. Rain fell during race hours in 2 of those years (2009 and 2016).

What was the hottest Colorado 10K?

Of the 19 years on record, 2017 was the warmest, reaching 60°F during race hours. The coldest start was 2011, at 35°F.

What was the windiest Colorado 10K?

Of the 19 years on record, 2007 was the windiest, with wind averaging 12 mph during race hours. The calmest was 2009, at 1 mph.

Colorado 10K weather history

Based on 19 years of data
Avg Temp
46°F
L:44° H:48°
RunScore
10
Conditions
Rain Freq
11%
2 of 19 yrs
Wind6mph
Dew33°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
50°/56°-
10
2025
clear-day
43°/50°-
10
2024
clear-day
40°/45°-
10
2023
partly-cloudy-day
49°/52°-
10
2022
clear-day
39°/42°-
10
2021
clear-night
39°/39°-
10
2019
clear-day
50°/55°-
10
2018
clear-day
50°/55°-
10
2017
clear-day
54°/60°-
9
2016
cloudy
34°/35°Light
10
2015
clear-day
49°/58°-
9
2014
clear-day
52°/52°-
10
2013
clear-day
35°/40°-
10
2012
clear-day
47°/51°-
10
2011
clear-day
35°/39°-
10
2010
cloudy
48°/49°-
10
2009
partly-cloudy-day
40°/42°Light
10
2008
clear-day
42°/48°-
10
2007
partly-cloudy-day
37°/40°-
10