Flat grade share
- Race to the King Ultramarathon
- 57.0% Favoured
Race to the King Ultramarathon vs Chiltern Wonderland 50 Ultramarathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofRace to the King Ultramarathon or Chiltern Wonderland 50 Ultramarathon — which comes out ahead?
Race to the King Ultramarathon and Chiltern Wonderland 50 Ultramarathon split the available advantages, so the better choice depends on which metric matters most to the runner.
Route comparison snapshot
Race to the King Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 2.6% Favoured
- flat grade share
- 57.0% Favoured
- lower ascent
- 1,434 m
- climbing density
- 13.9 m/km
- net elevation
- 0 m
- maximum grade
- 18.8%
Chiltern Wonderland 50 Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 5.0%
- flat grade share
- 38.8%
- lower ascent
- 1,699 m
- climbing density
- 21.0 m/km
- net elevation
- 5 m
- maximum grade
- 39.0%
| Metric | Race to the King Ultramarathon | Chiltern Wonderland 50 Ultramarathon |
|---|---|---|
| Flat grade share | 57.0% ✓ | 38.8% |
| GAP factor (% slower than flat) | 2.6% ✓ | 5.0% |
| Uphill share | 23.3% | 30.7% |
| Steep-up share | 7.7% | 12.7% |
| Downhill share | 19.7% | 30.5% |
| Total ascent (m) | 1,434 m | 1,699 m |
| Climbing density (m/km) | 13.9 m/km | 21.0 m/km |
| Longest climb length (m) | 2,680 m | 740 m |
| Longest climb gain (m) | 128 m | 78 m |
| Longest climb average grade | 4.8% | 10.6% |
| Total descent (m) | 1,434 m | 1,694 m |
| Net elevation (m) | 0 m | 5 m |
| Max absolute grade | 18.8% | 39.0% |
| Start elevation (m) | 52 m | 43 m |
| Finish elevation (m) | 52 m | 48 m |
| Value | 61/100 | 68/100 ✓ |
| Scenic score | 100/100 ✓ | 76/100 |
| Conditions | 15/100 | Unavailable |
| Entry fee (GBP) | £155 | £115 ✓ |
| Lowest modelled true cost (GBP) | £285 | £245 ✓ |
GAP factor (% slower than flat)
- Race to the King Ultramarathon
- 2.6% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Race to the King Ultramarathon
- 13.9 m/km
- Chiltern Wonderland 50 Ultramarathon
- 21.0 m/km
Longest climb length (m)
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Value
- Chiltern Wonderland 50 Ultramarathon
- 68/100 Favoured
Scenic score
- Race to the King Ultramarathon
- 100/100 Favoured
Conditions
- Chiltern Wonderland 50 Ultramarathon
- Unavailable
Entry fee (GBP)
- Chiltern Wonderland 50 Ultramarathon
- £115 Favoured
Lowest modelled true cost (GBP)
- Chiltern Wonderland 50 Ultramarathon
- £245 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 | Race to the King Ultramarathon | Chiltern Wonderland 50 Ultramarathon |
|---|---|---|
| Schedule | Exact race date awaiting a fresh source check. | Exact race date not confirmed. Event weekend starts 2026-09-19 (legacy event-level date). |
| Location | West Dean Gardens, South Downs, South East | Goring-on-Thames, South East |
| Actual distance | 103 km | 81 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Loop | Loop |
| Surface | Trail | 80% trail, 20% road |
| Laps | Unavailable | 1 |
| Elevation character | Rolling | Hilly |
| Terrain | Trail, Mixed | Trail, Mixed |
| Scenery | Coastal, Historic, Parkland, Countryside, Waterfront, Riverside, Forest | Countryside, Riverside, Forest, Historic, Parkland |
| Atmosphere | Charity, Destination, Scenic Tour | Community, Scenic Tour |
| Technicality | Moderate | Moderate |
| Total ascent | 1,434 m | 1,699 m |
| Climbing density | 13.9 m/km | 21.0 m/km |
| Total descent | 1,434 m | 1,694 m |
| Net elevation | 0 m | 5 m |
| Max absolute grade | 18.8% | 39.0% |
| Flat grade share | 57.0% | 38.8% |
| GAP factor | 2.6% | 5.0% |
| Cutoff | 24:00:00 | 13:00:00 |
| Field cap | Unavailable | 250 |
| Entry model | Open | Qualifier |
| Entry fee | £155 | £115 |
| Lowest modelled true cost | £285 | £245 |
| Cost model origin | National Average | National Average |
| Measured course | Unavailable | Yes |
Schedule
- Race to the King Ultramarathon
Exact race date awaiting a fresh source check.
- Chiltern Wonderland 50 Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-09-19 (legacy event-level date).
Location
- Race to the King Ultramarathon
- West Dean Gardens, South Downs, South East
- Chiltern Wonderland 50 Ultramarathon
- Goring-on-Thames, South East
Actual distance
- Race to the King Ultramarathon
- 103 km
- Chiltern Wonderland 50 Ultramarathon
- 81 km
raceindex.org mapped route held
- Race to the King Ultramarathon
- Held
- Chiltern Wonderland 50 Ultramarathon
- Held
raceindex.org elevation profile held
- Race to the King Ultramarathon
- Held
- Chiltern Wonderland 50 Ultramarathon
- Held
Course type
- Race to the King Ultramarathon
- Loop
- Chiltern Wonderland 50 Ultramarathon
- Loop
Surface
- Race to the King Ultramarathon
- Trail
- Chiltern Wonderland 50 Ultramarathon
- 80% trail, 20% road
Laps
- Race to the King Ultramarathon
- Unavailable
- Chiltern Wonderland 50 Ultramarathon
- 1
Elevation character
- Race to the King Ultramarathon
- Rolling
- Chiltern Wonderland 50 Ultramarathon
- Hilly
Terrain
- Race to the King Ultramarathon
- Trail, Mixed
- Chiltern Wonderland 50 Ultramarathon
- Trail, Mixed
Scenery
- Race to the King Ultramarathon
- Coastal, Historic, Parkland, Countryside, Waterfront, Riverside, Forest
- Chiltern Wonderland 50 Ultramarathon
- Countryside, Riverside, Forest, Historic, Parkland
Atmosphere
- Race to the King Ultramarathon
- Charity, Destination, Scenic Tour
- Chiltern Wonderland 50 Ultramarathon
- Community, Scenic Tour
Technicality
- Race to the King Ultramarathon
- Moderate
- Chiltern Wonderland 50 Ultramarathon
- Moderate
Total ascent
- Race to the King Ultramarathon
- 1,434 m
- Chiltern Wonderland 50 Ultramarathon
- 1,699 m
Climbing density
- Race to the King Ultramarathon
- 13.9 m/km
- Chiltern Wonderland 50 Ultramarathon
- 21.0 m/km
Total descent
- Race to the King Ultramarathon
- 1,434 m
- Chiltern Wonderland 50 Ultramarathon
- 1,694 m
Net elevation
- Race to the King Ultramarathon
- 0 m
- Chiltern Wonderland 50 Ultramarathon
- 5 m
Max absolute grade
- Race to the King Ultramarathon
- 18.8%
- Chiltern Wonderland 50 Ultramarathon
- 39.0%
Flat grade share
- Race to the King Ultramarathon
- 57.0%
- Chiltern Wonderland 50 Ultramarathon
- 38.8%
GAP factor
- Race to the King Ultramarathon
- 2.6%
- Chiltern Wonderland 50 Ultramarathon
- 5.0%
Cutoff
- Race to the King Ultramarathon
- 24:00:00
- Chiltern Wonderland 50 Ultramarathon
- 13:00:00
Field cap
- Race to the King Ultramarathon
- Unavailable
- Chiltern Wonderland 50 Ultramarathon
- 250
Entry model
- Race to the King Ultramarathon
- Open
- Chiltern Wonderland 50 Ultramarathon
- Qualifier
Entry fee
- Race to the King Ultramarathon
- £155
- Chiltern Wonderland 50 Ultramarathon
- £115
Lowest modelled true cost
- Race to the King Ultramarathon
- £285
- Chiltern Wonderland 50 Ultramarathon
- £245
Cost model origin
- Race to the King Ultramarathon
- National Average
- Chiltern Wonderland 50 Ultramarathon
- National Average
Measured course
- Race to the King Ultramarathon
- Unavailable
- Chiltern Wonderland 50 Ultramarathon
- Yes
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, Race to the King Ultramarathon or Chiltern Wonderland 50 Ultramarathon?
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.