Sundance to Spearfish Marathon
Spearfish, United States of America · Sunday 13 September 2026
RoadFull Marathon
Sundance to Spearfish Marathon is a road marathon in Spearfish, South Dakota, scheduled for September 13, 2026, with a course that climbs 66 meters of elevation while traversing terrain between a low point of 1,109 meters and a high point of 2,017 meters. Runners will compete on paved road surfaces throughout the event in the Black Hills region of northwestern South Dakota. September temperatures in Spearfish typically range from 10-22°C (50-72°F) with variable conditions common to the northern Great Plains.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:47:38
Time difference: -12.4 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain66m
Elevation High2017m
Elevation Low1109m
How hard is Sundance to Spearfish Marathon?
Very Easyharder than 0% of marathons
Flattest / easiestHardest
On our difficulty model, Sundance to Spearfish Marathon plays about 6 minutes faster than an average road marathon - a genuine PB course for a 3:30 runner. It ranks #1148 hardest of 1150 marathons we analyse, and #573 of 575 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 Sundance to Spearfish Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Sundance to Spearfish Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:50:14 | −09:46 |
| 3:30:00 | 3:18:54 | −11:06 |
| 4:00:00 | 3:47:38 | −12:22 |
| 4:30:00 | 4:16:25 | −13:35 |
| 5:00:00 | 4:45:13 | −14:47 |
| 5:30:00 | 5:14:04 | −15:56 |
| 6:00:00 | 5:42:55 | −17:05 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Sundance to Spearfish Marathon 2026 Course Analysis
Sundance to Spearfish Marathon is a full marathon held in Spearfish, United States of America. It is scheduled for Sunday 13 September 2026. The course is run on road surface with 66m of total climbing and around 972m of descent (a net drop of roughly 906m), with its high point near 2017m above sea level.
Elevation Profile
This is a net-downhill course: it descends roughly 906m more than it climbs (66m of ascent against about 972m of descent), dropping from a high point near 2017m toward 1109m above sea level. Point-to-point downhill courses like this are among the fastest available for a personal best or a Boston qualifier - just be aware that sustained descending fatigues the quads late in the race, so ease off early and do some downhill running in training.
Surface Type: Road
Sundance to Spearfish 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 Sundance to Spearfish Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Sundance to Spearfish Marathon fits your goal, these courses play out about the same on our difficulty model.
Other Marathons in United States of America
Deseret News Marathon
Salt Lake City, United States of America
Road145m gainJuly 2026
Run Sunset Beach
Sunset Beach, United States of America
Road109m gainJuly 2026
Run the Pier Marathon
Manistee, United States of America
Road0m gainJuly 2026
Xenia Avenue Marathon
Brooklyn Park, United States of America
Road0m gainJuly 2026
Grand Island Trail Marathon
Munising, United States of America
Trail0m gainJuly 2026