• Ultramarathon
  • 50 km
  • Bath
  • Event weekend starts
  • Entry from £65
  • Past event

Two Tunnels Railway Races Ultramarathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Modelled energy-cost change 5.6% versus flat · net elevation 2 m · true cost £195

Decision summary

Two Tunnels Railway Races Ultramarathon at a glance

Route ascent
1,231 m

Lower than 79% of comparable mapped races

Cut-off average pace
10:12/km

8:30:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Entry fee
£65

Lower than 89% of comparable known fees

Typical conditions
62/100

Historical race-date favourability, not a forecast

Evidence depth
26 verified facts

Stored GPS route

Quick answers

What runners ask first

Two Tunnels Railway Races Ultramarathon route map

raceindex.org has a GPS course file for Two Tunnels Railway Races Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

How hilly is the Two Tunnels Railway Races Ultramarathon?

The Two Tunnels Railway Races Ultramarathon route has 1,231 m of ascent, 1,229 m of descent and an estimated 5.6% grade-adjusted pace penalty versus a flat route.

Where does the Two Tunnels Railway Races Ultramarathon route go?

The Two Tunnels Railway Races Ultramarathon route starts at Brickfields Park, Bath and finishes at Brickfields Park, Bath. Underfoot, expect traffic-free greenway path. It passes Devonshire Tunnel (408m), Combe Down Tunnel (1672m) and Two Tunnels Greenway.

What should runners know on race day for the Two Tunnels Railway Races Ultramarathon?

Bag drop is available.

Race character

Scenery

  • Parkland
  • Countryside
  • Riverside
  • City
  • Historic
  • Forest

Atmosphere

  • Scenic Tour
  • Community

Terrain

  • Trail

Entry, logistics and records

Entry requirements

Entry status
Past event: The listed edition date has passed.
Cut-off
8.5 hours

Race day logistics

Bag drop
Yes
Post-race village
Brickfields Park with toilets, coffee and food vans and a children's playground
Medal
Yes

Access and course status

Start
Brickfields Park, Bath
Finish
Brickfields Park, Bath
Nearest station
Oldfield Park (800m); Bath Spa (2 miles)
Park and ride
Yes
Measured course
Yes

Course facts

Course type
Laps
Surface
Traffic Free greenway path
Landmarks
Devonshire Tunnel (408m), Combe Down Tunnel (1672m), Two Tunnels Greenway
Notable features
  • Runs through two well-lit former railway tunnels on the Two Tunnels Greenway: the Devonshire Tunnel (408m) and the Combe Down Tunnel (1672m)
  • the 50km includes around 20km underground

How hilly is the Two Tunnels Railway Races Ultramarathon?

17%15%36%15%17%
  • Steep descent 17%
  • Descent 15%
  • Flat 36%
  • Climb 15%
  • Steep climb 17%
Total ascent
1,231 m
Net elevation
+2 m
GAP factor
5.6%
Longest climb
1,530 m at 7.1%
Gradient mix and ascent are derived from the course geometry under our published normalisation, not taken from organiser marketing.

What does it really cost to run?

Estimated cost to the start line from National Average
Entry fee£65
Travel (modelled)£40
Accommodation (modelled)£90
Estimated total£195
Entry fee is a sourced fact. Travel and accommodation are modelled estimates for a typical runner from this region, not quoted prices.

What are typical race-day conditions?

  • 17°CTypical temperature
  • 22 kphTypical wind
  • 3 mmTypical rainfall
  • 62Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

More race details

Is the Two Tunnels Railway Races Ultramarathon flat?

Its normalised GAP factor is 5.6% slower than a flat course, with about 1231 m of total ascent.

How much does the Two Tunnels Railway Races Ultramarathon cost?

The adult entry fee is £65, and the estimated true cost to the start line is about £195 including modelled travel and accommodation.

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