PB potential
- Beachy Head Marathon Ultramarathon
- Unavailable
Beachy Head Marathon Ultramarathon vs South Downs Way 100 Ultramarathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofBeachy Head Marathon Ultramarathon or South Downs Way 100 Ultramarathon — which comes out ahead?
Beachy Head Marathon Ultramarathon and South Downs Way 100 Ultramarathon split the available advantages, so the better choice depends on which metric matters most to the runner.
Route comparison snapshot
Beachy Head Marathon Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 5.7%
- flat grade share
- 25.3%
- lower ascent
- 1,308 m
- climbing density
- 24.9 m/km
- net elevation
- 2 m
- maximum grade
- 31.2%
South Downs Way 100 Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 4.1% Favoured
- flat grade share
- 34.7% Favoured
- lower ascent
- 3,410 m
- climbing density
- 21.2 m/km
- net elevation
- -94 m
- maximum grade
- 31.8%
| Metric | Beachy Head Marathon Ultramarathon | South Downs Way 100 Ultramarathon |
|---|---|---|
| PB potential | Unavailable | 83/100 |
| Flat grade share | 25.3% | 34.7% ✓ |
| GAP factor (% slower than flat) | 5.7% | 4.1% ✓ |
| Uphill share | 37.6% | 32.7% |
| Steep-up share | 16.1% | 13.3% |
| Downhill share | 37.1% | 32.6% |
| Total ascent (m) | 1,308 m | 3,410 m |
| Climbing density (m/km) | 24.9 m/km | 21.2 m/km |
| Longest climb length (m) | 2,340 m | 2,970 m |
| Longest climb gain (m) | 146 m | 194 m |
| Longest climb average grade | 6.3% | 6.5% |
| Total descent (m) | 1,305 m | 3,504 m |
| Net elevation (m) | 2 m | -94 m |
| Max absolute grade | 31.2% | 31.8% |
| Start elevation (m) | 49 m | 99 m |
| Finish elevation (m) | 51 m | 5 m |
| Median finish context (s) | Unavailable | 24:53:35 |
| Value | Unavailable | 48/100 |
| Beginner-friendliness | Unavailable | 66/100 |
| Scenic score | 95/100 ✓ | 91/100 |
| Conditions | 67/100 ✓ | 49/100 |
| Entry fee (GBP) | Unavailable | £220 |
| Lowest modelled true cost (GBP) | Unavailable | £350 |
Flat grade share
- South Downs Way 100 Ultramarathon
- 34.7% Favoured
GAP factor (% slower than flat)
- South Downs Way 100 Ultramarathon
- 4.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Beachy Head Marathon Ultramarathon
- 24.9 m/km
- South Downs Way 100 Ultramarathon
- 21.2 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)
Median finish context (s)
- Beachy Head Marathon Ultramarathon
- Unavailable
Value
- Beachy Head Marathon Ultramarathon
- Unavailable
Beginner-friendliness
- Beachy Head Marathon Ultramarathon
- Unavailable
Scenic score
- Beachy Head Marathon Ultramarathon
- 95/100 Favoured
Conditions
- Beachy Head Marathon Ultramarathon
- 67/100 Favoured
Entry fee (GBP)
- Beachy Head Marathon Ultramarathon
- Unavailable
Lowest modelled true cost (GBP)
- Beachy Head Marathon Ultramarathon
- Unavailable
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 | Beachy Head Marathon Ultramarathon | South Downs Way 100 Ultramarathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-24 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date). |
| Location | Eastbourne, South East | Winchester to Eastbourne, South East |
| Actual distance | 52.6 km | 160.9 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Point To Point |
| Surface | Unavailable | Mostly trail (about 85% trail, 15% road) |
| Elevation character | Unavailable | Rolling |
| Terrain | Road | Trail, Road, Track |
| Scenery | Coastal, Parkland, Countryside, Forest, Riverside, Waterfront | Countryside, Historic, Forest, Coastal, Riverside |
| Atmosphere | Scenic Tour, Destination | Scenic Tour, Destination, Competitive |
| Technicality | Unavailable | Moderate |
| Total ascent | 1,308 m | 3,410 m |
| Climbing density | 24.9 m/km | 21.2 m/km |
| Total descent | 1,305 m | 3,504 m |
| Net elevation | 2 m | -94 m |
| Max absolute grade | 31.2% | 31.8% |
| Flat grade share | 25.3% | 34.7% |
| GAP factor | 5.7% | 4.1% |
| Cutoff | 9:00:00 | 30:00:00 |
| Field cap | 200 | 600 |
| Latest finishers | Unavailable | 357 |
| Entry model | Qualifier | Qualifier |
| Entry fee | Unavailable | £220 |
| Lowest modelled true cost | Unavailable | £350 |
| Cost model origin | Unavailable | National Average |
Schedule
- Beachy Head Marathon Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-10-24 (legacy event-level date).
- South Downs Way 100 Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date).
Location
- Beachy Head Marathon Ultramarathon
- Eastbourne, South East
- South Downs Way 100 Ultramarathon
- Winchester to Eastbourne, South East
Actual distance
- Beachy Head Marathon Ultramarathon
- 52.6 km
- South Downs Way 100 Ultramarathon
- 160.9 km
raceindex.org mapped route held
- Beachy Head Marathon Ultramarathon
- Held
- South Downs Way 100 Ultramarathon
- Held
raceindex.org elevation profile held
- Beachy Head Marathon Ultramarathon
- Held
- South Downs Way 100 Ultramarathon
- Held
Course type
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- Point To Point
Surface
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- Mostly trail (about 85% trail, 15% road)
Elevation character
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- Rolling
Terrain
- Beachy Head Marathon Ultramarathon
- Road
- South Downs Way 100 Ultramarathon
- Trail, Road, Track
Scenery
- Beachy Head Marathon Ultramarathon
- Coastal, Parkland, Countryside, Forest, Riverside, Waterfront
- South Downs Way 100 Ultramarathon
- Countryside, Historic, Forest, Coastal, Riverside
Atmosphere
- Beachy Head Marathon Ultramarathon
- Scenic Tour, Destination
- South Downs Way 100 Ultramarathon
- Scenic Tour, Destination, Competitive
Technicality
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- Moderate
Total ascent
- Beachy Head Marathon Ultramarathon
- 1,308 m
- South Downs Way 100 Ultramarathon
- 3,410 m
Climbing density
- Beachy Head Marathon Ultramarathon
- 24.9 m/km
- South Downs Way 100 Ultramarathon
- 21.2 m/km
Total descent
- Beachy Head Marathon Ultramarathon
- 1,305 m
- South Downs Way 100 Ultramarathon
- 3,504 m
Net elevation
- Beachy Head Marathon Ultramarathon
- 2 m
- South Downs Way 100 Ultramarathon
- -94 m
Max absolute grade
- Beachy Head Marathon Ultramarathon
- 31.2%
- South Downs Way 100 Ultramarathon
- 31.8%
Flat grade share
- Beachy Head Marathon Ultramarathon
- 25.3%
- South Downs Way 100 Ultramarathon
- 34.7%
GAP factor
- Beachy Head Marathon Ultramarathon
- 5.7%
- South Downs Way 100 Ultramarathon
- 4.1%
Cutoff
- Beachy Head Marathon Ultramarathon
- 9:00:00
- South Downs Way 100 Ultramarathon
- 30:00:00
Field cap
- Beachy Head Marathon Ultramarathon
- 200
- South Downs Way 100 Ultramarathon
- 600
Latest finishers
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- 357
Entry model
- Beachy Head Marathon Ultramarathon
- Qualifier
- South Downs Way 100 Ultramarathon
- Qualifier
Entry fee
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- £220
Lowest modelled true cost
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- £350
Cost model origin
- Beachy Head Marathon Ultramarathon
- Unavailable
- South Downs Way 100 Ultramarathon
- National Average
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, Beachy Head Marathon Ultramarathon or South Downs Way 100 Ultramarathon?
South Downs Way 100 Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.