Flat grade share
- Sioux Falls Skedaddle Half Marathon
- 77.9% Favoured
Mount Rushmore Half Marathon vs Sioux Falls Skedaddle Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofMount Rushmore Half Marathon or Sioux Falls Skedaddle Half Marathon — which comes out ahead?
Sioux Falls Skedaddle Half Marathon has the stronger available profile on flat grade share, course flatness and conditions.
Route comparison snapshot
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%
Sioux Falls Skedaddle Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.3% Favoured
- flat grade share
- 77.9% Favoured
- lower ascent
- 133 m
- climbing density
- 6.3 m/km
- net elevation
- -7 m
- maximum grade
- 13.3%
| Metric | Mount Rushmore Half Marathon | Sioux Falls Skedaddle Half Marathon |
|---|---|---|
| Flat grade share | 19.3% | 77.9% ✓ |
| GAP factor (% slower than flat) | 7.6% | 0.3% ✓ |
| Uphill share | 43.4% | 10.9% |
| Steep-up share | 20.1% | 1.1% |
| Downhill share | 37.3% | 11.2% |
| Total ascent (m) | 603 m | 133 m |
| Climbing density (m/km) | 28.6 m/km | 6.3 m/km |
| Longest climb length (m) | 2,140 m | 220 m |
| Longest climb gain (m) | 129 m | 15 m |
| Longest climb average grade | 6.0% | 6.6% |
| Total descent (m) | 516 m | 140 m |
| Net elevation (m) | 87 m | -7 m |
| Max absolute grade | 26.3% | 13.3% |
| Start elevation (m) | 1,242 m | 435 m |
| Finish elevation (m) | 1,329 m | 429 m |
| Scenic score | 91/100 ✓ | 43/100 |
| Conditions | 47/100 | 64/100 ✓ |
GAP factor (% slower than flat)
- Sioux Falls Skedaddle Half Marathon
- 0.3% 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 Skedaddle Half Marathon
- 64/100 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 | Mount Rushmore Half Marathon | Sioux Falls Skedaddle Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-05-17 (legacy event-level date). |
| Location | Keystone, South Dakota | Sioux Falls, 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 | Point To Point | Point To Point |
| Surface | Begins on a well Packed dirt road for about 3 miles before turning to pavement for the remainder. | Starts on city streets then follows the paved Big Sioux River bike path/trail for most of the route. |
| Elevation character | Hilly | Rolling |
| Terrain | Mixed | Trail, Road |
| Scenery | Mountain, Countryside, Forest, Historic | Riverside, Parkland, City |
| Atmosphere | Destination, Scenic Tour, Wilderness | Community, Scenic Tour |
| Technicality | Non Technical | Non Technical |
| Total ascent | 603 m | 133 m |
| Climbing density | 28.6 m/km | 6.3 m/km |
| Total descent | 516 m | 140 m |
| Net elevation | 87 m | -7 m |
| Max absolute grade | 26.3% | 13.3% |
| Flat grade share | 19.3% | 77.9% |
| GAP factor | 7.6% | 0.3% |
| Entry model | Open | Open |
Schedule
- Mount Rushmore Half Marathon
Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).
- Sioux Falls Skedaddle Half Marathon
Exact race date not confirmed. Event weekend starts 2026-05-17 (legacy event-level date).
Location
- Mount Rushmore Half Marathon
- Keystone, South Dakota
- Sioux Falls Skedaddle Half Marathon
- Sioux Falls, South Dakota
Actual distance
- Mount Rushmore Half Marathon
- 21.1 km
- Sioux Falls Skedaddle Half Marathon
- 21.1 km
raceindex.org mapped route held
- Mount Rushmore Half Marathon
- Held
- Sioux Falls Skedaddle Half Marathon
- Held
raceindex.org elevation profile held
- Mount Rushmore Half Marathon
- Held
- Sioux Falls Skedaddle Half Marathon
- Held
Course type
- Mount Rushmore Half Marathon
- Point To Point
- Sioux Falls Skedaddle Half Marathon
- Point To Point
Surface
- Mount Rushmore Half Marathon
- Begins on a well Packed dirt road for about 3 miles before turning to pavement for the remainder.
- Sioux Falls Skedaddle Half Marathon
- Starts on city streets then follows the paved Big Sioux River bike path/trail for most of the route.
Elevation character
- Mount Rushmore Half Marathon
- Hilly
- Sioux Falls Skedaddle Half Marathon
- Rolling
Terrain
- Mount Rushmore Half Marathon
- Mixed
- Sioux Falls Skedaddle Half Marathon
- Trail, Road
Scenery
- Mount Rushmore Half Marathon
- Mountain, Countryside, Forest, Historic
- Sioux Falls Skedaddle Half Marathon
- Riverside, Parkland, City
Atmosphere
- Mount Rushmore Half Marathon
- Destination, Scenic Tour, Wilderness
- Sioux Falls Skedaddle Half Marathon
- Community, Scenic Tour
Technicality
- Mount Rushmore Half Marathon
- Non Technical
- Sioux Falls Skedaddle Half Marathon
- Non Technical
Total ascent
- Mount Rushmore Half Marathon
- 603 m
- Sioux Falls Skedaddle Half Marathon
- 133 m
Climbing density
- Mount Rushmore Half Marathon
- 28.6 m/km
- Sioux Falls Skedaddle Half Marathon
- 6.3 m/km
Total descent
- Mount Rushmore Half Marathon
- 516 m
- Sioux Falls Skedaddle Half Marathon
- 140 m
Net elevation
- Mount Rushmore Half Marathon
- 87 m
- Sioux Falls Skedaddle Half Marathon
- -7 m
Max absolute grade
- Mount Rushmore Half Marathon
- 26.3%
- Sioux Falls Skedaddle Half Marathon
- 13.3%
Flat grade share
- Mount Rushmore Half Marathon
- 19.3%
- Sioux Falls Skedaddle Half Marathon
- 77.9%
GAP factor
- Mount Rushmore Half Marathon
- 7.6%
- Sioux Falls Skedaddle Half Marathon
- 0.3%
Entry model
- Mount Rushmore Half Marathon
- Open
- Sioux Falls Skedaddle 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, Mount Rushmore Half Marathon or Sioux Falls Skedaddle Half Marathon?
Sioux Falls Skedaddle Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.