The 2026 Rim Rock Half Marathon has concluded.

Rim Rock Half Marathon

Race complete
Fruita, CO, USA · November 1, 2026·
cloudy52°·53° high·Breezy·Rain possible
10
Register

Rim Rock Half Marathon race day weather

cloudy
52°at start
57° high
Windy
Dry
Your goal
0:00:00

Comfortable temps, moderate wind, rain likely

Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 19mph may affect pacing on open sections of the course. Rain is likely — waterproof your phone and bib, and consider a disposable poncho for the corral. Moderate humidity at 79% is worth noting for effort level, especially in later miles.

cloudy10
cloudy10
cloudy10
cloudy10
rain10
rain10
cloudy9
cloudy9
cloudy8
cloudy8
cloudy9

Pace Calculator

13.1mi
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 Rim Rock Half Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

About the Rim Rock Half Marathon

The Rim Rock Half Marathon follows the second half of the Rim Rock Marathon course, starting near Artist Point inside Colorado National Monument. Runners head west along the closed lane of Rim Rock Drive past Monument Canyon View, Saddlehorn and Balanced Rock View, with canyon and Grand Valley views for much of the way. After leaving the monument the route runs the shoulder of Highway 340, then takes the Little Salt Wash Trail under I-70 and finishes through James M. Robb State Park at the Fruita Community Center.

Race weekend

Sunday, November 1
7:30 AMMarathon (26.2 mi)
9:00 AMHalf Marathon (13.1 mi)
Area Map
Course Map

Rim Rock Half Marathon FAQ

When is the 2026 Rim Rock Half Marathon?

The 2026 Rim Rock Half Marathon will be held on Sunday November 1, 2026.

What will the weather be like for the 2026 Rim Rock Half Marathon?

The forecast calls for a high of 57°F and a low of 49°F with a 100% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Rim Rock Half Marathon?

Over the 5 years racecast.io has race-day weather for (2022 to 2026), it averaged 47°F at the start and 53°F by a typical finish. Rain fell during race hours in 1 of those years (2026).

What was the hottest Rim Rock Half Marathon?

Of the 5 years on record, 2023 was the warmest, reaching 58°F during race hours. The coldest start was 2022, at 43°F.

What was the windiest Rim Rock Half Marathon?

Of the 5 years on record, 2026 was the windiest, with wind averaging 10 mph during race hours. The calmest was 2025, at 2 mph.

Rim Rock Half Marathon weather history

Based on 5 years of data
Avg Temp
50°F
L:47° H:53°
RunScore
10
Conditions
Rain Freq
20%
1 of 5 yrs
Wind5mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
52°/53°Light
10
2025
clear-day
47°/55°-
10
2024
cloudy
47°/50°-
10
2023
clear-day
48°/58°-
10
2022
partly-cloudy-day
43°/47°-
10