Flat grade share
- Race to the King Ultramarathon
- 57.0% Favoured
Chiltern Wonderland 50 Ultramarathon vs Race to the King Ultramarathon
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 or Race to the King Ultramarathon — which comes out ahead?
Chiltern 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.
Route comparison snapshot
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%
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%
| 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 |
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)
- Chiltern Wonderland 50 Ultramarathon
- 21.0 m/km
- Race to the King Ultramarathon
- 13.9 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 | Chiltern Wonderland 50 Ultramarathon | Race to the King Ultramarathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-09-19 (legacy event-level date). | Exact race date awaiting a fresh source check. |
| Location | Goring-on-Thames, South East | West Dean Gardens, South Downs, South East |
| Actual distance | 81 km | 103 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org 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 |
Schedule
- Chiltern Wonderland 50 Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-09-19 (legacy event-level date).
- Race to the King Ultramarathon
Exact race date awaiting a fresh source check.
Location
- Chiltern Wonderland 50 Ultramarathon
- Goring-on-Thames, South East
- Race to the King Ultramarathon
- West Dean Gardens, South Downs, South East
Actual distance
- Chiltern Wonderland 50 Ultramarathon
- 81 km
- Race to the King Ultramarathon
- 103 km
raceindex.org mapped route held
- Chiltern Wonderland 50 Ultramarathon
- Held
- Race to the King Ultramarathon
- Held
raceindex.org elevation profile held
- Chiltern Wonderland 50 Ultramarathon
- Held
- Race to the King Ultramarathon
- Held
Course type
- Chiltern Wonderland 50 Ultramarathon
- Loop
- Race to the King Ultramarathon
- Loop
Surface
- Chiltern Wonderland 50 Ultramarathon
- 80% trail, 20% road
- Race to the King Ultramarathon
- Trail
Laps
- Chiltern Wonderland 50 Ultramarathon
- 1
- Race to the King Ultramarathon
- Unavailable
Elevation character
- Chiltern Wonderland 50 Ultramarathon
- Hilly
- Race to the King Ultramarathon
- Rolling
Terrain
- Chiltern Wonderland 50 Ultramarathon
- Trail, Mixed
- Race to the King Ultramarathon
- Trail, Mixed
Scenery
- Chiltern Wonderland 50 Ultramarathon
- Countryside, Riverside, Forest, Historic, Parkland
- Race to the King Ultramarathon
- Coastal, Historic, Parkland, Countryside, Waterfront, Riverside, Forest
Atmosphere
- Chiltern Wonderland 50 Ultramarathon
- Community, Scenic Tour
- Race to the King Ultramarathon
- Charity, Destination, Scenic Tour
Technicality
- Chiltern Wonderland 50 Ultramarathon
- Moderate
- Race to the King Ultramarathon
- Moderate
Total ascent
- Chiltern Wonderland 50 Ultramarathon
- 1,699 m
- Race to the King Ultramarathon
- 1,434 m
Climbing density
- Chiltern Wonderland 50 Ultramarathon
- 21.0 m/km
- Race to the King Ultramarathon
- 13.9 m/km
Total descent
- Chiltern Wonderland 50 Ultramarathon
- 1,694 m
- Race to the King Ultramarathon
- 1,434 m
Net elevation
- Chiltern Wonderland 50 Ultramarathon
- 5 m
- Race to the King Ultramarathon
- 0 m
Max absolute grade
- Chiltern Wonderland 50 Ultramarathon
- 39.0%
- Race to the King Ultramarathon
- 18.8%
Flat grade share
- Chiltern Wonderland 50 Ultramarathon
- 38.8%
- Race to the King Ultramarathon
- 57.0%
GAP factor
- Chiltern Wonderland 50 Ultramarathon
- 5.0%
- Race to the King Ultramarathon
- 2.6%
Cutoff
- Chiltern Wonderland 50 Ultramarathon
- 13:00:00
- Race to the King Ultramarathon
- 24:00:00
Field cap
- Chiltern Wonderland 50 Ultramarathon
- 250
- Race to the King Ultramarathon
- Unavailable
Entry model
- Chiltern Wonderland 50 Ultramarathon
- Qualifier
- Race to the King Ultramarathon
- Open
Entry fee
- Chiltern Wonderland 50 Ultramarathon
- £115
- Race to the King Ultramarathon
- £155
Lowest modelled true cost
- Chiltern Wonderland 50 Ultramarathon
- £245
- Race to the King Ultramarathon
- £285
Cost model origin
- Chiltern Wonderland 50 Ultramarathon
- National Average
- Race to the King Ultramarathon
- National Average
Measured course
- Chiltern Wonderland 50 Ultramarathon
- Yes
- Race to the King Ultramarathon
- Unavailable
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, Chiltern Wonderland 50 Ultramarathon or Race to the King 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.