The 2026 Colorado Fall Equinox Half Marathon has concluded.

Colorado Fall Equinox Half Marathon

Race complete
Fort Collins, CO, USA · September 20, 2026·
partly-cloudy-day56°·63° high·Light·Dry
7
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Race Day Weather

partly-cloudy-day
56°at start
73° high
Breezy
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 56°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 73°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

partly-cloudy-night8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day7
partly-cloudy-day7
clear-day6
clear-day5
clear-day5
clear-day5

Pace Calculator

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Race Plan

Get your personalized Colorado Fall Equinox Half 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

The Wild & Scenic Half Marathon is a point-to-point course that starts at the Mishawaka Amphitheater in the Poudre Canyon and runs downhill along the Cache la Poudre River to a finish meadow at the base of the canyon. The USATF-certified road course drops about 650 net feet, most of it before mile 10, then flattens through the last few miles. It is a runnable downhill rather than a steep one, with a maximum grade under 7 percent. Runners ride buses from Fort Collins to the start on race morning.

Race weekend

Sunday, September 20
6:30 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)
8:00 AM5M (5.0 mi)
Area Map

Course Map

FAQ

When is the 2026 Colorado Fall Equinox Half Marathon?

The 2026 Colorado Fall Equinox Half Marathon will be held on Sunday September 20, 2026.

What is the time limit for the Colorado Fall Equinox Half Marathon?

The time limit for the Colorado Fall Equinox Half Marathon is 4 hours.

What will the weather be like for the 2026 Colorado Fall Equinox Half Marathon?

The forecast calls for a high of 74°F and a low of 54°F with a 100% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 7 years of data
Avg Temp
59°F
L:55° H:63°
RunScore
8
Conditions
Rain Freq
29%
2 of 7 yrs
Wind5mph
Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
56°/63°-
7
2025
rain
55°/60°Light
8
2024
rain
49°/49°Light
10
2023
clear-day
53°/66°-
8
2022
clear-day
56°/66°-
7
2021
clear-day
69°/77°-
6
2019
clear-day
47°/58°-
9