Flat grade share
- Race to the King Ultramarathon
- 57.0% 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 ofChiltern Wonderland 50 Ultramarathon and Race to the King Ultramarathon split the available advantages, so the better choice depends on which metric matters most to the runner.
| Metric | Chiltern Wonderland 50 Ultramarathon | Race to the King Ultramarathon |
|---|---|---|
| Flat grade share | 38.8% | 57.0% ✓ |
| GAP factor (% slower than flat) | 5.0% | 2.6% ✓ |
| Uphill share | 30.7% | 23.3% |
| Steep-up share | 12.7% | 7.7% |
| Downhill share | 30.5% | 19.7% |
| Total ascent (m) | 1,699 m | 1,434 m |
| Climbing density (m/km) | 21.0 m/km | 13.9 m/km |
| Longest climb length (m) | 740 m | 2,680 m |
| Longest climb gain (m) | 78 m | 128 m |
| Longest climb average grade | 10.6% | 4.8% |
| Total descent (m) | 1,694 m | 1,434 m |
| Net elevation (m) | 5 m | 0 m |
| Max absolute grade | 39.0% | 18.8% |
| Start elevation (m) | 43 m | 52 m |
| Finish elevation (m) | 48 m | 52 m |
| Value | 68/100 ✓ | 61/100 |
| Scenic score | 76/100 | 100/100 ✓ |
| Conditions | Unavailable | 15/100 |
| Entry fee (GBP) | £115 ✓ | £155 |
| Lowest modelled true cost (GBP) | £245 ✓ | £285 |
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 | Chiltern Wonderland 50 Ultramarathon | Race to the King Ultramarathon |
|---|---|---|
| Race date | 2026-09-19 | 2027-06-19 |
| Location | Goring-on-Thames, South East | West Dean Gardens, South Downs, South East |
| Actual distance | 81 km | 103 km |
| RaceIndex mapped route held | Held | Held |
| RaceIndex elevation profile held | Held | Held |
| Course type | Loop | Loop |
| Surface | 80% trail, 20% road | Trail |
| Laps | 1 | Unavailable |
| Elevation character | Hilly | Rolling |
| Terrain | Trail, Mixed | Trail, Mixed |
| Scenery | Countryside, Riverside, Forest, Historic, Parkland | Coastal, Historic, Parkland, Countryside, Waterfront, Riverside, Forest |
| Atmosphere | Community, Scenic Tour | Charity, Destination, Scenic Tour |
| Technicality | Moderate | Moderate |
| Total ascent | 1,699 m | 1,434 m |
| Climbing density | 21.0 m/km | 13.9 m/km |
| Total descent | 1,694 m | 1,434 m |
| Net elevation | 5 m | 0 m |
| Max absolute grade | 39.0% | 18.8% |
| Flat grade share | 38.8% | 57.0% |
| GAP factor | 5.0% | 2.6% |
| Cutoff | 13:00:00 | 24:00:00 |
| Field cap | 250 | Unavailable |
| Entry model | Qualifier | Open |
| Entry fee | £115 | £155 |
| Lowest modelled true cost | £245 | £285 |
| Cost model origin | National Average | National Average |
| Measured course | Yes | Unavailable |
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Race to the King Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.