
Spearfish, United States of America · Monday 17 August 2026
The Leading Ladies' Marathon, held on August 16-17, 2025, in Spearfish, South Dakota, is a unique event that starts at an elevation of 6,000 feet and runs downhill into Spearfish, losing 2,400 feet to a finishing elevation of 3,600 feet. The course offers a fast and scenic route, making it ideal for runners seeking personal bests. With a PR Score of 99.88, it ranks as the 34th fastest marathon in the U.S. and the 2nd fastest in South Dakota.
Adjusted Time
1:50:22
Time difference: +5.4 minutes compared to a flat, road, temperate course.
On our difficulty model, Leading Ladies' Marathon & Half Marathon plays about 6 minutes slower than an average road half marathon for a 1:30 runner. It ranks #126 hardest of 450 half marathons we analyse, and #37 of 145 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
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 Leading Ladies' Marathon & Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:33:53 | +03:53 |
| 1:45:00 | 1:50:22 | +05:22 |
| 2:00:00 | 2:06:57 | +06:57 |
| 2:15:00 | 2:23:39 | +08:39 |
| 2:30:00 | 2:40:26 | +10:26 |
| 2:45:00 | 2:57:19 | +12:19 |
| 3:00:00 | 3:14:17 | +14:17 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Leading Ladies' Marathon & Half Marathon is a half marathon held in Spearfish, United States of America. It is scheduled for Monday 17 August 2026. The course is run on road surface with 107m of total climbing, with its high point near 1849m above sea level. For registration and full race details, visit the official Leading Ladies' Marathon & Half Marathon website.
With 107m of total climbing, this is a gently undulating course, ranging between roughly 1118m and 1849m above sea level. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Based on historical weather data for August, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 17°C and 30°C. Heat is one of the biggest performance factors in distance running - for every degree above 15°C, finish times can slow by roughly 1-2%. Extra hydration and a conservative start are strongly recommended. There is a low chance of rain (0%), so dry conditions are likely.
Leading Ladies' Marathon & 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 Leading Ladies' Marathon & Half Marathon against other half marathons to find the right race for your goals.
If Leading Ladies' Marathon & Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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