Flat grade share
- Bath & Bristol Railway Races Ultramarathon
- 96.7% Favoured
Bath & Bristol Railway Races Ultramarathon vs Cairngorms Ultra Trail
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofBath & Bristol Railway Races Ultramarathon or Cairngorms Ultra Trail — which comes out ahead?
Bath & Bristol Railway Races Ultramarathon has the stronger available profile on flat grade share, course flatness and value score.
Route comparison snapshot
Bath & Bristol Railway Races Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.1% Favoured
- flat grade share
- 96.7% Favoured
- lower ascent
- 136 m
- climbing density
- 2.7 m/km
- net elevation
- 1 m
- maximum grade
- 6.7%
Cairngorms Ultra Trail
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 2.8%
- flat grade share
- 46.5%
- lower ascent
- 948 m
- climbing density
- 15.8 m/km
- net elevation
- -1 m
- maximum grade
- 25.0%
| Metric | Bath & Bristol Railway Races Ultramarathon | Cairngorms Ultra Trail |
|---|---|---|
| Flat grade share | 96.7% ✓ | 46.5% |
| GAP factor (% slower than flat) | 0.1% ✓ | 2.8% |
| Uphill share | 1.6% | 26.0% |
| Steep-up share | 0.1% | 8.0% |
| Downhill share | 1.7% | 27.6% |
| Total ascent (m) | 136 m | 948 m |
| Climbing density (m/km) | 2.7 m/km | 15.8 m/km |
| Longest climb length (m) | 3,370 m | 3,550 m |
| Longest climb gain (m) | 44 m | 187 m |
| Longest climb average grade | 1.3% | 5.3% |
| Total descent (m) | 135 m | 949 m |
| Net elevation (m) | 1 m | -1 m |
| Max absolute grade | 6.7% | 25.0% |
| Start elevation (m) | 18 m | 340 m |
| Finish elevation (m) | 19 m | 339 m |
| Value | 78/100 ✓ | 78/100 |
| Scenic score | 83/100 | 100/100 ✓ |
| Conditions | 81/100 | 87/100 ✓ |
| Entry fee (GBP) | £65 ✓ | £67 |
| Lowest modelled true cost (GBP) | £195 ✓ | £197 |
GAP factor (% slower than flat)
- Bath & Bristol Railway Races Ultramarathon
- 0.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Cairngorms Ultra Trail
- 15.8 m/km
Longest climb length (m)
- Cairngorms Ultra Trail
- 3,550 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
- Bath & Bristol Railway Races Ultramarathon
- 78/100 Favoured
- Cairngorms Ultra Trail
- 78/100
Scenic score
- Cairngorms Ultra Trail
- 100/100 Favoured
Conditions
- Cairngorms Ultra Trail
- 87/100 Favoured
Entry fee (GBP)
- Bath & Bristol Railway Races Ultramarathon
- £65 Favoured
Lowest modelled true cost (GBP)
- Bath & Bristol Railway Races Ultramarathon
- £195 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 | Bath & Bristol Railway Races Ultramarathon | Cairngorms Ultra Trail |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date). |
| Location | Bath, South West | Braemar, Scotland |
| Actual distance | 50 km | 60 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Loop |
| Surface | Essentially 100% tarmac, aside from a small amount of grass at the start and finish | 33% singletrack trail (20km), 62% off Road ATV tracks / forest roads (38.5km), 5% minor roads (3.5km) |
| Elevation character | Flat | Hilly |
| Terrain | Road, Mixed, Trail | Road, Trail, Mixed |
| Scenery | Riverside, Countryside, Historic, City, Parkland | Mountain, Countryside, Parkland, Forest, Moorland, Riverside, Lakeside |
| Atmosphere | Scenic Tour | Wilderness, Scenic Tour, Destination |
| Technicality | Non Technical | Moderate |
| Total ascent | 136 m | 948 m |
| Climbing density | 2.7 m/km | 15.8 m/km |
| Total descent | 135 m | 949 m |
| Net elevation | 1 m | -1 m |
| Max absolute grade | 6.7% | 25.0% |
| Flat grade share | 96.7% | 46.5% |
| GAP factor | 0.1% | 2.8% |
| Cutoff | 8:30:00 | 12:30:00 |
| Entry model | Open | Open |
| Entry fee | £65 | £67 |
| Lowest modelled true cost | £195 | £197 |
| Cost model origin | National Average | National Average |
| Measured course | Yes | Unavailable |
Schedule
- Bath & Bristol Railway Races Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).
- Cairngorms Ultra Trail
Exact race date not confirmed. Event weekend starts 2026-06-13 (legacy event-level date).
Location
- Bath & Bristol Railway Races Ultramarathon
- Bath, South West
- Cairngorms Ultra Trail
- Braemar, Scotland
Actual distance
- Bath & Bristol Railway Races Ultramarathon
- 50 km
- Cairngorms Ultra Trail
- 60 km
raceindex.org mapped route held
- Bath & Bristol Railway Races Ultramarathon
- Held
- Cairngorms Ultra Trail
- Held
raceindex.org elevation profile held
- Bath & Bristol Railway Races Ultramarathon
- Held
- Cairngorms Ultra Trail
- Held
Course type
- Bath & Bristol Railway Races Ultramarathon
- Unavailable
- Cairngorms Ultra Trail
- Loop
Surface
- Bath & Bristol Railway Races Ultramarathon
- Essentially 100% tarmac, aside from a small amount of grass at the start and finish
- Cairngorms Ultra Trail
- 33% singletrack trail (20km), 62% off Road ATV tracks / forest roads (38.5km), 5% minor roads (3.5km)
Elevation character
- Bath & Bristol Railway Races Ultramarathon
- Flat
- Cairngorms Ultra Trail
- Hilly
Terrain
- Bath & Bristol Railway Races Ultramarathon
- Road, Mixed, Trail
- Cairngorms Ultra Trail
- Road, Trail, Mixed
Scenery
- Bath & Bristol Railway Races Ultramarathon
- Riverside, Countryside, Historic, City, Parkland
- Cairngorms Ultra Trail
- Mountain, Countryside, Parkland, Forest, Moorland, Riverside, Lakeside
Atmosphere
- Bath & Bristol Railway Races Ultramarathon
- Scenic Tour
- Cairngorms Ultra Trail
- Wilderness, Scenic Tour, Destination
Technicality
- Bath & Bristol Railway Races Ultramarathon
- Non Technical
- Cairngorms Ultra Trail
- Moderate
Total ascent
- Bath & Bristol Railway Races Ultramarathon
- 136 m
- Cairngorms Ultra Trail
- 948 m
Climbing density
- Bath & Bristol Railway Races Ultramarathon
- 2.7 m/km
- Cairngorms Ultra Trail
- 15.8 m/km
Total descent
- Bath & Bristol Railway Races Ultramarathon
- 135 m
- Cairngorms Ultra Trail
- 949 m
Net elevation
- Bath & Bristol Railway Races Ultramarathon
- 1 m
- Cairngorms Ultra Trail
- -1 m
Max absolute grade
- Bath & Bristol Railway Races Ultramarathon
- 6.7%
- Cairngorms Ultra Trail
- 25.0%
Flat grade share
- Bath & Bristol Railway Races Ultramarathon
- 96.7%
- Cairngorms Ultra Trail
- 46.5%
GAP factor
- Bath & Bristol Railway Races Ultramarathon
- 0.1%
- Cairngorms Ultra Trail
- 2.8%
Cutoff
- Bath & Bristol Railway Races Ultramarathon
- 8:30:00
- Cairngorms Ultra Trail
- 12:30:00
Entry model
- Bath & Bristol Railway Races Ultramarathon
- Open
- Cairngorms Ultra Trail
- Open
Entry fee
- Bath & Bristol Railway Races Ultramarathon
- £65
- Cairngorms Ultra Trail
- £67
Lowest modelled true cost
- Bath & Bristol Railway Races Ultramarathon
- £195
- Cairngorms Ultra Trail
- £197
Cost model origin
- Bath & Bristol Railway Races Ultramarathon
- National Average
- Cairngorms Ultra Trail
- National Average
Measured course
- Bath & Bristol Railway Races Ultramarathon
- Yes
- Cairngorms Ultra Trail
- 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, Bath & Bristol Railway Races Ultramarathon or Cairngorms Ultra Trail?
Bath & Bristol Railway Races Ultramarathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.