Bath & Bristol Railway Races 10K vs Two Tunnels Railway Races 10K

Name: Bath & Bristol Railway Races 10K vs Two Tunnels Railway Races 10K comparison data
Creator: raceindex.org

Bath & Bristol Railway Races 10K or Two Tunnels Railway Races 10K — which comes out ahead?

Bath & Bristol Railway Races 10K has the stronger available profile on flat grade share, course flatness and scenery score.

Route comparison snapshot

Bath & Bristol Railway Races 10K

Mapped route: Held
Elevation profile: Held
course flatness: 0.1% Favoured
flat grade share: 99.3% Favoured
lower ascent: 7 m
climbing density: 0.7 m/km
net elevation: 1 m
maximum grade: 2.6%

Two Tunnels Railway Races 10K

Mapped route: Held
Elevation profile: Held
course flatness: 5.8%
flat grade share: 39.0%
lower ascent: 244 m
climbing density: 24.4 m/km
net elevation: 2 m
maximum grade: 18.1%

Head-to-head comparison
Metric	Bath & Bristol Railway Races 10K	Two Tunnels Railway Races 10K
Flat grade share	99.3% ✓	39.0%
GAP factor (% slower than flat)	0.1% ✓	5.8%
Uphill share	0.3%	31.0%
Steep-up share	0.0%	16.4%
Downhill share	0.4%	30.0%
Total ascent (m)	7 m	244 m
Climbing density (m/km)	0.7 m/km	24.4 m/km
Longest climb length (m)	400 m	1,520 m
Longest climb gain (m)	3 m	108 m
Longest climb average grade	0.7%	7.1%
Total descent (m)	6 m	241 m
Net elevation (m)	1 m	2 m
Max absolute grade	2.6%	18.1%
Start elevation (m)	18 m	41 m
Finish elevation (m)	19 m	43 m
Value	84/100	84/100
Scenic score	83/100 ✓	77/100
Conditions	81/100 ✓	62/100
Entry fee (GBP)	£32	£32
Lowest modelled true cost (GBP)	£162	£162

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

Race facts comparison
Fact	Bath & Bristol Railway Races 10K	Two Tunnels Railway Races 10K
Schedule	Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).	Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date).
Location	Bath, South West	Bath, South West
Actual distance	10 km	10 km
raceindex.org mapped route held	Held	Held
raceindex.org elevation profile held	Held	Held
Course type	Out And Back	Unavailable
Surface	Essentially 100% tarmac, aside from a small amount of grass at the start and finish	Unavailable
Elevation character	Unavailable	Flat
Terrain	Trail	Road, Trail
Scenery	Riverside, Countryside, Historic, City, Parkland	Parkland, Countryside, Riverside, City, Historic, Forest
Atmosphere	Scenic Tour	Scenic Tour, Community
Total ascent	7 m	244 m
Climbing density	0.7 m/km	24.4 m/km
Total descent	6 m	241 m
Net elevation	1 m	2 m
Max absolute grade	2.6%	18.1%
Flat grade share	99.3%	39.0%
GAP factor	0.1%	5.8%
Entry model	Open	Open
Entry fee	£32	£32
Lowest modelled true cost	£162	£162
Cost model origin	National Average	National Average
Measured course	Yes	Yes

Schedule

Bath & Bristol Railway Races 10K: Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).
Two Tunnels Railway Races 10K: Exact race date not confirmed. Event weekend starts 2026-08-16 (legacy event-level date).

Location

Bath & Bristol Railway Races 10K: Bath, South West
Two Tunnels Railway Races 10K: Bath, South West

Actual distance

Bath & Bristol Railway Races 10K: 10 km
Two Tunnels Railway Races 10K: 10 km

raceindex.org mapped route held

Bath & Bristol Railway Races 10K: Held
Two Tunnels Railway Races 10K: Held

raceindex.org elevation profile held

Bath & Bristol Railway Races 10K: Held
Two Tunnels Railway Races 10K: Held

Course type

Bath & Bristol Railway Races 10K: Out And Back
Two Tunnels Railway Races 10K: Unavailable

Surface

Bath & Bristol Railway Races 10K: Essentially 100% tarmac, aside from a small amount of grass at the start and finish
Two Tunnels Railway Races 10K: Unavailable

Elevation character

Bath & Bristol Railway Races 10K: Unavailable
Two Tunnels Railway Races 10K: Flat

Terrain

Bath & Bristol Railway Races 10K: Trail
Two Tunnels Railway Races 10K: Road, Trail

Scenery

Bath & Bristol Railway Races 10K: Riverside, Countryside, Historic, City, Parkland
Two Tunnels Railway Races 10K: Parkland, Countryside, Riverside, City, Historic, Forest

Atmosphere

Bath & Bristol Railway Races 10K: Scenic Tour
Two Tunnels Railway Races 10K: Scenic Tour, Community

Total ascent

Bath & Bristol Railway Races 10K: 7 m
Two Tunnels Railway Races 10K: 244 m

Climbing density

Bath & Bristol Railway Races 10K: 0.7 m/km
Two Tunnels Railway Races 10K: 24.4 m/km

Total descent

Bath & Bristol Railway Races 10K: 6 m
Two Tunnels Railway Races 10K: 241 m

Net elevation

Bath & Bristol Railway Races 10K: 1 m
Two Tunnels Railway Races 10K: 2 m

Max absolute grade

Bath & Bristol Railway Races 10K: 2.6%
Two Tunnels Railway Races 10K: 18.1%

Flat grade share

Bath & Bristol Railway Races 10K: 99.3%
Two Tunnels Railway Races 10K: 39.0%

GAP factor

Bath & Bristol Railway Races 10K: 0.1%
Two Tunnels Railway Races 10K: 5.8%

Entry model

Bath & Bristol Railway Races 10K: Open
Two Tunnels Railway Races 10K: Open

Entry fee

Bath & Bristol Railway Races 10K: £32
Two Tunnels Railway Races 10K: £32

Lowest modelled true cost

Bath & Bristol Railway Races 10K: £162
Two Tunnels Railway Races 10K: £162

Cost model origin

Bath & Bristol Railway Races 10K: National Average
Two Tunnels Railway Races 10K: National Average

Measured course

Bath & Bristol Railway Races 10K: Yes
Two Tunnels Railway Races 10K: 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, Bath & Bristol Railway Races 10K or Two Tunnels Railway Races 10K?

Bath & Bristol Railway Races 10K has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.

Read the full pages

How figures are calculated →

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of 2026-08-17.

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (4)

Layer E archive-api.open-meteo.com
Layer B src_derived
Layer A relishrunningraces.com · last check inconclusive on 2026-09-17
Layer A relishrunningraces.com · last check inconclusive on 2026-07-29

Read the full methodology →

Bath & Bristol Railway Races 10K or Two Tunnels Railway Races 10K — which comes out ahead?

Route comparison snapshot

Bath & Bristol Railway Races 10K

Two Tunnels Railway Races 10K

Flat grade share

GAP factor (% slower than flat)

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

Scenic score

Conditions

Entry fee (GBP)

Lowest modelled true cost (GBP)

Race facts that change the decision

Schedule

Location

Actual distance

raceindex.org mapped route held

raceindex.org elevation profile held

Course type

Surface

Elevation character

Terrain

Scenery

Atmosphere

Total ascent

Climbing density

Total descent

Net elevation

Max absolute grade

Flat grade share

GAP factor

Entry model

Entry fee

Lowest modelled true cost

Cost model origin

Measured course

Common questions

Which is flatter, Bath & Bristol Railway Races 10K or Two Tunnels Railway Races 10K?

Read the full pages