Rim Rock Marathon
Race Day Weather
Cool start, steady improvement
Runners will face a cool start at 35°F, gradually warming to a pleasant 56°F. With light winds from the S and humidity at 48%, conditions will be favorable. Adjust pacing conservatively in the early miles to acclimate to the temperature rise. No rain is expected, but a light layer may be beneficial before the race.
Pace Calculator
Get forecast alerts for Rim Rock 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
The Rim Rock Marathon and Half Marathon run along Rim Rock Drive through Colorado National Monument between Grand Junction and Fruita, Colorado. First held in 1997, the race is organized by the Grand Junction Sports Commission and finishes at Fruita's Circle Park. The 2025 edition (the 29th annual) drew nearly 600 finishers, its largest field to date. Source
Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 |  | 42°/65° | - | 23° | |
2024 |  | 44°/50° | Light | 36° | |
2023 | | 45°/64° | - | 29° | |
2022 | | 41°/51° | - | 36° |