Flat grade share
- Sioux Falls Marathon Half Marathon
- 72.6% Favoured
Sioux Falls Marathon Half Marathon vs Mount Rushmore Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofSioux Falls Marathon Half Marathon or Mount Rushmore Half Marathon — which comes out ahead?
Sioux Falls Marathon Half Marathon has the stronger available profile on flat grade share, course flatness and conditions.
Route comparison snapshot
Sioux Falls Marathon Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.5% Favoured
- flat grade share
- 72.6% Favoured
- lower ascent
- 149 m
- climbing density
- 7.1 m/km
- net elevation
- -2 m
- maximum grade
- 8.0%
Mount Rushmore Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 7.6%
- flat grade share
- 19.3%
- lower ascent
- 603 m
- climbing density
- 28.6 m/km
- net elevation
- 87 m
- maximum grade
- 26.3%
| Metric | Sioux Falls Marathon Half Marathon | Mount Rushmore Half Marathon |
|---|---|---|
| Flat grade share | 72.6% ✓ | 19.3% |
| GAP factor (% slower than flat) | 0.5% ✓ | 7.6% |
| Uphill share | 13.1% | 43.4% |
| Steep-up share | 1.4% | 20.1% |
| Downhill share | 14.3% | 37.3% |
| Total ascent (m) | 149 m | 603 m |
| Climbing density (m/km) | 7.1 m/km | 28.6 m/km |
| Longest climb length (m) | 900 m | 2,140 m |
| Longest climb gain (m) | 19 m | 129 m |
| Longest climb average grade | 2.1% | 6.0% |
| Total descent (m) | 151 m | 516 m |
| Net elevation (m) | -2 m | 87 m |
| Max absolute grade | 8.0% | 26.3% |
| Start elevation (m) | 435 m | 1,242 m |
| Finish elevation (m) | 434 m | 1,329 m |
| Scenic score | 80/100 | 91/100 ✓ |
| Conditions | 51/100 ✓ | 47/100 |
GAP factor (% slower than flat)
- Sioux Falls Marathon Half Marathon
- 0.5% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Mount Rushmore Half Marathon
- 28.6 m/km
Longest climb length (m)
- Mount Rushmore Half Marathon
- 2,140 m
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
- Mount Rushmore Half Marathon
- 1,242 m
Finish elevation (m)
- Mount Rushmore Half Marathon
- 1,329 m
Scenic score
- Mount Rushmore Half Marathon
- 91/100 Favoured
Conditions
- Sioux Falls Marathon Half Marathon
- 51/100 Favoured
Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.
Race facts that change the decision
| Fact | Sioux Falls Marathon Half Marathon | Mount Rushmore Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date). |
| Location | Sioux Falls, South Dakota | Keystone, South Dakota |
| Actual distance | 21.1 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Point To Point |
| Surface | Unavailable | Begins on a well Packed dirt road for about 3 miles before turning to pavement for the remainder. |
| Elevation character | Unavailable | Hilly |
| Terrain | Trail | Mixed |
| Scenery | Riverside, Waterfront, City, Parkland, Historic, Lakeside | Mountain, Countryside, Forest, Historic |
| Atmosphere | Community, Scenic Tour | Destination, Scenic Tour, Wilderness |
| Technicality | Unavailable | Non Technical |
| Total ascent | 149 m | 603 m |
| Climbing density | 7.1 m/km | 28.6 m/km |
| Total descent | 151 m | 516 m |
| Net elevation | -2 m | 87 m |
| Max absolute grade | 8.0% | 26.3% |
| Flat grade share | 72.6% | 19.3% |
| GAP factor | 0.5% | 7.6% |
| Cutoff | 3:15:00 | Unavailable |
| Entry model | Open | Open |
Schedule
- Sioux Falls Marathon Half Marathon
Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date).
- Mount Rushmore Half Marathon
Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).
Location
- Sioux Falls Marathon Half Marathon
- Sioux Falls, South Dakota
- Mount Rushmore Half Marathon
- Keystone, South Dakota
Actual distance
- Sioux Falls Marathon Half Marathon
- 21.1 km
- Mount Rushmore Half Marathon
- 21.1 km
raceindex.org mapped route held
- Sioux Falls Marathon Half Marathon
- Held
- Mount Rushmore Half Marathon
- Held
raceindex.org elevation profile held
- Sioux Falls Marathon Half Marathon
- Held
- Mount Rushmore Half Marathon
- Held
Course type
- Sioux Falls Marathon Half Marathon
- Unavailable
- Mount Rushmore Half Marathon
- Point To Point
Surface
- Sioux Falls Marathon Half Marathon
- Unavailable
- Mount Rushmore Half Marathon
- Begins on a well Packed dirt road for about 3 miles before turning to pavement for the remainder.
Elevation character
- Sioux Falls Marathon Half Marathon
- Unavailable
- Mount Rushmore Half Marathon
- Hilly
Terrain
- Sioux Falls Marathon Half Marathon
- Trail
- Mount Rushmore Half Marathon
- Mixed
Scenery
- Sioux Falls Marathon Half Marathon
- Riverside, Waterfront, City, Parkland, Historic, Lakeside
- Mount Rushmore Half Marathon
- Mountain, Countryside, Forest, Historic
Atmosphere
- Sioux Falls Marathon Half Marathon
- Community, Scenic Tour
- Mount Rushmore Half Marathon
- Destination, Scenic Tour, Wilderness
Technicality
- Sioux Falls Marathon Half Marathon
- Unavailable
- Mount Rushmore Half Marathon
- Non Technical
Total ascent
- Sioux Falls Marathon Half Marathon
- 149 m
- Mount Rushmore Half Marathon
- 603 m
Climbing density
- Sioux Falls Marathon Half Marathon
- 7.1 m/km
- Mount Rushmore Half Marathon
- 28.6 m/km
Total descent
- Sioux Falls Marathon Half Marathon
- 151 m
- Mount Rushmore Half Marathon
- 516 m
Net elevation
- Sioux Falls Marathon Half Marathon
- -2 m
- Mount Rushmore Half Marathon
- 87 m
Max absolute grade
- Sioux Falls Marathon Half Marathon
- 8.0%
- Mount Rushmore Half Marathon
- 26.3%
Flat grade share
- Sioux Falls Marathon Half Marathon
- 72.6%
- Mount Rushmore Half Marathon
- 19.3%
GAP factor
- Sioux Falls Marathon Half Marathon
- 0.5%
- Mount Rushmore Half Marathon
- 7.6%
Cutoff
- Sioux Falls Marathon Half Marathon
- 3:15:00
- Mount Rushmore Half Marathon
- Unavailable
Entry model
- Sioux Falls Marathon Half Marathon
- Open
- Mount Rushmore Half Marathon
- Open
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Common questions
Which is flatter, Sioux Falls Marathon Half Marathon or Mount Rushmore Half Marathon?
Sioux Falls Marathon Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.