Flat grade share
- Flint Hills 50 and Marathon Ultramarathon
- 68.1% Favoured
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A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofFlint Hills 50 and Marathon Ultramarathon has the stronger available profile on flat grade share, course flatness and conditions.
| Metric | Flint Hills 50 and Marathon Ultramarathon | The Hawk Hundred (Lawrence) Ultramarathon |
|---|---|---|
| Flat grade share | 68.1% ✓ | 60.6% |
| GAP factor (% slower than flat) | 0.6% ✓ | 1.2% |
| Uphill share | 16.3% | 20.1% |
| Steep-up share | 1.0% | 2.8% |
| Downhill share | 15.6% | 19.3% |
| Total ascent (m) | 655 m | 1,527 m |
| Climbing density (m/km) | 8.1 m/km | 9.5 m/km |
| Longest climb length (m) | 1,320 m | 1,110 m |
| Longest climb gain (m) | 26 m | 32 m |
| Longest climb average grade | 2.0% | 2.9% |
| Total descent (m) | 656 m | 1,518 m |
| Net elevation (m) | -1 m | 8 m |
| Max absolute grade | 9.6% | 15.2% |
| Start elevation (m) | 313 m | 292 m |
| Finish elevation (m) | 312 m | 301 m |
| Scenic score | 31/100 | 100/100 ✓ |
| Conditions | 77/100 ✓ | 46/100 |
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.
| Fact | Flint Hills 50 and Marathon Ultramarathon | The Hawk Hundred (Lawrence) Ultramarathon |
|---|---|---|
| Race date | 2027-04-10 | 2026-09-12 |
| Location | Manhattan, Kansas | Lawrence, Kansas |
| Actual distance | 80.5 km | 160.9 km |
| RaceIndex mapped route held | Held | Held |
| RaceIndex elevation profile held | Held | Held |
| Course type | Laps | Laps |
| Surface | Dirt Road | Technical rolling singletrack trail through Clinton State Park, including a scenic shoreline red Blazed section, the Cactus Ridge section and a 2.5 Mile loop with two ascents of Bunker Hill. |
| Elevation character | Unavailable | Rolling |
| Terrain | Road, Trail | Trail |
| Scenery | Countryside, Waterfront | Parkland, Coastal, Forest, Lakeside, Countryside |
| Technicality | Unavailable | Technical |
| Total ascent | 655 m | 1,527 m |
| Climbing density | 8.1 m/km | 9.5 m/km |
| Total descent | 656 m | 1,518 m |
| Net elevation | -1 m | 8 m |
| Max absolute grade | 9.6% | 15.2% |
| Flat grade share | 68.1% | 60.6% |
| GAP factor | 0.6% | 1.2% |
| Cutoff | 14:00:00 | 32:00:00 |
| Entry model | Open | Open |
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Flint Hills 50 and Marathon Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.