Flat grade share
- Two Tunnels Railway Races Marathon
- 71.5% Favoured
Two Tunnels Railway Races Marathon vs Two Tunnels Railway Races Ultramarathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofTwo Tunnels Railway Races Marathon or Two Tunnels Railway Races Ultramarathon — which comes out ahead?
Two Tunnels Railway Races Marathon has the stronger available profile on flat grade share, course flatness and value score.
Route comparison snapshot
Two Tunnels Railway Races Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 2.0% Favoured
- flat grade share
- 71.5% Favoured
- lower ascent
- 415 m
- climbing density
- 9.8 m/km
- net elevation
- 2 m
- maximum grade
- 21.0%
Two Tunnels Railway Races Ultramarathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 5.6%
- flat grade share
- 35.9%
- lower ascent
- 1,231 m
- climbing density
- 24.6 m/km
- net elevation
- 2 m
- maximum grade
- 17.3%
| Metric | Two Tunnels Railway Races Marathon | Two Tunnels Railway Races Ultramarathon |
|---|---|---|
| Flat grade share | 71.5% ✓ | 35.9% |
| GAP factor (% slower than flat) | 2.0% ✓ | 5.6% |
| Uphill share | 16.6% | 31.9% |
| Steep-up share | 5.7% | 17.1% |
| Downhill share | 11.9% | 32.2% |
| Total ascent (m) | 415 m | 1,231 m |
| Climbing density (m/km) | 9.8 m/km | 24.6 m/km |
| Longest climb length (m) | 1,920 m | 1,530 m |
| Longest climb gain (m) | 99 m | 108 m |
| Longest climb average grade | 5.1% | 7.1% |
| Total descent (m) | 413 m | 1,229 m |
| Net elevation (m) | 2 m | 2 m |
| Max absolute grade | 21.0% | 17.3% |
| Start elevation (m) | 41 m | 41 m |
| Finish elevation (m) | 43 m | 43 m |
| Value | 79/100 ✓ | 78/100 |
| Scenic score | 77/100 | 81/100 ✓ |
| Conditions | 62/100 | 62/100 |
| Entry fee (GBP) | £60 ✓ | £65 |
| Lowest modelled true cost (GBP) | £190 ✓ | £195 |
GAP factor (% slower than flat)
- Two Tunnels Railway Races Marathon
- 2.0% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (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
- Two Tunnels Railway Races Marathon
- 79/100 Favoured
Scenic score
- Two Tunnels Railway Races Ultramarathon
- 81/100 Favoured
Conditions
Entry fee (GBP)
- Two Tunnels Railway Races Marathon
- £60 Favoured
Lowest modelled true cost (GBP)
- Two Tunnels Railway Races Marathon
- £190 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.
Same-distance comparisons are most meaningful; cross-distance metrics are contextual.
Race facts that change the decision
| Fact | Two Tunnels Railway Races Marathon | Two Tunnels Railway Races Ultramarathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date). |
| Location | Bath, South West | Bath, South West |
| Actual distance | 42.2 km | 50 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Unavailable | Laps |
| Surface | Unavailable | Traffic Free greenway path |
| Laps | 2 | Unavailable |
| Elevation character | Gently Rolling | Unavailable |
| Terrain | Mixed, Towpath, Trail | Trail |
| Scenery | Parkland, Countryside, Riverside, City, Historic, Forest | Parkland, Countryside, Riverside, City, Historic, Forest |
| Atmosphere | Scenic Tour, Community | Scenic Tour, Community |
| Technicality | Non Technical | Unavailable |
| Total ascent | 415 m | 1,231 m |
| Climbing density | 9.8 m/km | 24.6 m/km |
| Total descent | 413 m | 1,229 m |
| Net elevation | 2 m | 2 m |
| Max absolute grade | 21.0% | 17.3% |
| Flat grade share | 71.5% | 35.9% |
| GAP factor | 2.0% | 5.6% |
| Cutoff | Unavailable | 8:30:00 |
| Entry model | Open | Open |
| Entry fee | £60 | £65 |
| Lowest modelled true cost | £190 | £195 |
| Cost model origin | National Average | National Average |
| Measured course | Unavailable | Yes |
Schedule
- Two Tunnels Railway Races Marathon
Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date).
- Two Tunnels Railway Races Ultramarathon
Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date).
Location
- Two Tunnels Railway Races Marathon
- Bath, South West
- Two Tunnels Railway Races Ultramarathon
- Bath, South West
Actual distance
- Two Tunnels Railway Races Marathon
- 42.2 km
- Two Tunnels Railway Races Ultramarathon
- 50 km
raceindex.org mapped route held
- Two Tunnels Railway Races Marathon
- Held
- Two Tunnels Railway Races Ultramarathon
- Held
raceindex.org elevation profile held
- Two Tunnels Railway Races Marathon
- Held
- Two Tunnels Railway Races Ultramarathon
- Held
Course type
- Two Tunnels Railway Races Marathon
- Unavailable
- Two Tunnels Railway Races Ultramarathon
- Laps
Surface
- Two Tunnels Railway Races Marathon
- Unavailable
- Two Tunnels Railway Races Ultramarathon
- Traffic Free greenway path
Laps
- Two Tunnels Railway Races Marathon
- 2
- Two Tunnels Railway Races Ultramarathon
- Unavailable
Elevation character
- Two Tunnels Railway Races Marathon
- Gently Rolling
- Two Tunnels Railway Races Ultramarathon
- Unavailable
Terrain
- Two Tunnels Railway Races Marathon
- Mixed, Towpath, Trail
- Two Tunnels Railway Races Ultramarathon
- Trail
Scenery
- Two Tunnels Railway Races Marathon
- Parkland, Countryside, Riverside, City, Historic, Forest
- Two Tunnels Railway Races Ultramarathon
- Parkland, Countryside, Riverside, City, Historic, Forest
Atmosphere
- Two Tunnels Railway Races Marathon
- Scenic Tour, Community
- Two Tunnels Railway Races Ultramarathon
- Scenic Tour, Community
Technicality
- Two Tunnels Railway Races Marathon
- Non Technical
- Two Tunnels Railway Races Ultramarathon
- Unavailable
Total ascent
- Two Tunnels Railway Races Marathon
- 415 m
- Two Tunnels Railway Races Ultramarathon
- 1,231 m
Climbing density
- Two Tunnels Railway Races Marathon
- 9.8 m/km
- Two Tunnels Railway Races Ultramarathon
- 24.6 m/km
Total descent
- Two Tunnels Railway Races Marathon
- 413 m
- Two Tunnels Railway Races Ultramarathon
- 1,229 m
Net elevation
- Two Tunnels Railway Races Marathon
- 2 m
- Two Tunnels Railway Races Ultramarathon
- 2 m
Max absolute grade
- Two Tunnels Railway Races Marathon
- 21.0%
- Two Tunnels Railway Races Ultramarathon
- 17.3%
Flat grade share
- Two Tunnels Railway Races Marathon
- 71.5%
- Two Tunnels Railway Races Ultramarathon
- 35.9%
GAP factor
- Two Tunnels Railway Races Marathon
- 2.0%
- Two Tunnels Railway Races Ultramarathon
- 5.6%
Cutoff
- Two Tunnels Railway Races Marathon
- Unavailable
- Two Tunnels Railway Races Ultramarathon
- 8:30:00
Entry model
- Two Tunnels Railway Races Marathon
- Open
- Two Tunnels Railway Races Ultramarathon
- Open
Entry fee
- Two Tunnels Railway Races Marathon
- £60
- Two Tunnels Railway Races Ultramarathon
- £65
Lowest modelled true cost
- Two Tunnels Railway Races Marathon
- £190
- Two Tunnels Railway Races Ultramarathon
- £195
Cost model origin
- Two Tunnels Railway Races Marathon
- National Average
- Two Tunnels Railway Races Ultramarathon
- National Average
Measured course
- Two Tunnels Railway Races Marathon
- Unavailable
- Two Tunnels Railway Races 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, Two Tunnels Railway Races Marathon or Two Tunnels Railway Races Ultramarathon?
Two Tunnels Railway Races Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.