Mount Rushmore Half Marathon
Keystone, United States of America · Expected Saturday 11 September 2027Date to be confirmed
Difficulty Calculator
Adjusted Time
2:01:21
Time difference: +16.4 minutes compared to an average road half marathon.
Course Details
Typical Race-Day Weather
Average for this date over the last 8 years.
How hard is Mount Rushmore Half Marathon?
On our difficulty model, Mount Rushmore Half Marathon plays about 13 minutes slower than an average road half marathon for a 1:30 runner. It ranks #63 hardest of 634 half marathons we analyse, and #16 of 186 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 Mount Rushmore 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 Mount Rushmore Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:42:30 | +12:30 |
| 1:45:00 | 2:01:21 | +16:21 |
| 2:00:00 | 2:20:32 | +20:32 |
| 2:15:00 | 2:40:00 | +25:00 |
| 2:30:00 | 2:59:45 | +29:45 |
| 2:45:00 | 3:19:45 | +34:45 |
| 3:00:00 | 3:40:01 | +40:01 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Mount Rushmore Half Marathon 2027 Course Analysis
Mount Rushmore Half Marathon is a half marathon held in Keystone, United States of America. The next edition is expected on Saturday 11 September 2027, following the pattern of previous editions (the 2nd Saturday of September). The organisers have not confirmed it yet. The course is run on road surface with 501m of total climbing, with its high point near 1657m above sea level. For registration and full race details, visit the official Mount Rushmore Half Marathon website.
Climbing
At 501m of total climbing, it is hillier than 97% of the 634 half marathons we rate. The hills will cost time: pace the climbs on effort, not on the watch. It runs at altitude (up to about 1657m), where thinner air slows most runners who live near sea level.
Race-day weather
Over the last 5 years this September date has averaged a high of 21°C and a low of 12°C. That is warmer than 64% of the half marathons we track.
On 11 September over the last 5 years, the high ranged from 14°C (2020) to 33°C (2025), so pack for either. It rained on 3 of those 5 days.
| 11 September | High | Low | Rain | Wind |
|---|---|---|---|---|
| 2025 | 33°C | 18°C | dry | 17 km/h |
| 2023 | 19°C | 7°C | dry | 15 km/h |
| 2021 | 25°C | 14°C | 1 h | 13 km/h |
| 2020 | 14°C | 7°C | 5 h | 11 km/h |
| 2019 | 15°C | 11°C | 19 h | 12 km/h |
Daily weather for the race location (Open-Meteo archive). Wind is the day's peak.
Looking for an easier marathon or a tougher challenge? You can also compare Mount Rushmore Half Marathon against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Mount Rushmore Half Marathon fits your goal, these courses play out about the same on our difficulty model.