Two Tunnels Races

Bath, United Kingdom • 16 Aug 2026

Two Tunnels Railway Races

The Two Tunnels Railway Races take place in Bath and use the Two Tunnels Trails that run under the city. The route passes through the Devonshire Tunnel (408 m) and the Combe Down Tunnel (1 672 m). The organiser states these are the longest underground sections used in UK races for each distance.

The event base is Brickfields Park, Bath BA2 1LX. There is no on site parking; attendees using cars are asked to use Odd Down Park and Ride and the shuttle service. The nearest train station is Oldfield Park about 800 m away and Bath Spa is around 2 miles from the start area. Facilities on site include toilets, coffee and food vans, and a bag drop. There are no changing rooms.

Available race options include:

  • Colourburst fun runs
  • 5km
  • 10km
  • Half marathon
  • Marathon
  • 50km solo and 50km pair
  • 5 x 10km relay

The 5km, Return Ticket 10km, Return Ticket Half Marathon and 50km are officially measured and the events are affiliated to UK Athletics. The marathon is not officially measured and is not eligible for London Marathon qualification times. Cut offs apply to some races: a 3 hour limit to start lap two of the marathon and an 8.5 hour cut off for the 50km. The organiser does not permit pure walkers but allows mixed run, jog and walk participation.

Drink and food stations vary by distance: there is no drinks station on the 5km; 10km has one feast station; the half marathon has three to five; the marathon and 50km have nine each. Stations offer water, electrolyte drinks and a mix of foods including gluten free, dairy free and vegan options. All runners of 5km and longer receive a 10 cm x 10 cm two sided event medal. Visit the organization's website for the most recent information.

Race information

50 km
50km Pair
50 km
5 X 10km Relay
50 km
50km Solo
Marathon
Marathon
Half Marathon
Half Marathon
10 km
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

Hazelbury Hurrah! is a multi terrain running event in Corsham on 10 July 2026 with a main six mile course and a 2 km junior race. The race is Trail Running Association licensed and supports local charities.

Teams of three race from the Packhorse pub to a Midford cider farm and back over an off road route, collecting and carrying a full barrel. Fancy dress is compulsory and prizes include fastest teams and best costume.

A 10 km trail race around Stoke Park in Stapleton, Bristol, organised by Town and Country Harriers. The marked course has steep climbs and natural obstacles, entry is for those aged 18 and over, and half the proceeds go to a local charity.

Multi-distance runs along the Wye Valley Greenway, including a long lit tunnel section. Mostly flat routes on former railway track with feed stations, clear marking and event medals for 5 km or longer.

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