Rim Rock Half Marathon
Grand Junction, United States of America · Monday 2 November 2026
Set against the rugged beauty of Colorado’s Red Rock Canyon, the Rim Rock Half Marathon challenges runners with a mix of rocky terrain and dramatic cliffs. The race provides a unique blend of trail and road running, with minimal ascents and sweeping downhill sections offering a mix of speed and awe-inspiring views. The course winds through natural rock formations, providing an unforgettable experience of Colorado’s wild and rugged landscape.
Difficulty Calculator
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:m
:s
Adjusted Time
1:45:06
Time difference: +0.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain135m
Elevation High1822m
Elevation Low1362m
Weather Forecast
High20°C
Low3°C
Chance of Rain0%
How hard is Rim Rock Half Marathon?
Moderateharder than 36% of half marathons
Flattest / easiestHardest
On our difficulty model, Rim Rock Half Marathon plays about 2 minutes slower than an average road half marathon for a 1:30 runner. It ranks #290 hardest of 450 half marathons we analyse, and #99 of 145 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Rim Rock Half Marathon?
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Rim Rock Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:29:41 | −00:19 |
| 1:45:00 | 1:45:06 | +00:06 |
| 2:00:00 | 2:00:32 | +00:32 |
| 2:15:00 | 2:16:01 | +01:01 |
| 2:30:00 | 2:31:31 | +01:31 |
| 2:45:00 | 2:47:03 | +02:03 |
| 3:00:00 | 3:02:37 | +02:37 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Rim Rock Half Marathon 2026 Course Analysis
Rim Rock Half Marathon is a half marathon held in Grand Junction, United States of America. It is scheduled for Monday 2 November 2026. The course is run on road surface with 135m of total climbing, with its high point near 1822m above sea level. For registration and full race details, visit the official Rim Rock Half Marathon website.
Elevation Profile
With 135m of total climbing, this is a gently undulating course, ranging between roughly 1362m and 1822m above sea level. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for November, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 3°C to 20°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (0%), so dry conditions are likely.
Surface Type: Road
Rim Rock Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Rim Rock Half Marathon against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Rim Rock Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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