Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst)

From Relish Running races
- Date Sun 22nd February 2026
- Location Bath, Bath and North East Somerset
- Price £10.80 - £49.68
- Races 17 races
- Distances 5km, 10km, Half Marathon
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Event summary
Participants will have the unique opportunity to run through the longest underground sections for each race distance in the UK, traversing the beautifully restored Devonshire and Combe Down Tunnels. These well-lit, smooth paths promise to create a distinctive and enjoyable atmosphere for every runner. With a start and finish location at Brickfields Park—perfect for picnics and post-race fun—this event is not just about the race, but also about creating lasting memories with family and friends. Plus, with every runner contributing to Sustrans, you can feel good knowing that your participation supports the ongoing maintenance of these incredible tunnels. Join us for a day filled with excitement, community spirit, and the joy of running!
Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst)
Sun 22nd February 2026





Organiser's Description
Cutting right under the city of the Bath, the two tunnels offer a truly unique running experience. The Somerset & Dorset Railway closed in 1966 and until April 2013, the tunnels had been sealed and inaccessible. Thanks to the hard work and dedication of the Two Tunnels Group and Sustrans over a period of 7 years, the two tunnels now have a new lease of life as a shared use path. The first tunnel, the Devonshire Tunnel is 408m long and the second tunnel, Combe Down Tunnel is 1672m long. Both tunnels are well lit and well surfaced and have recently been converted into a shared use path for the enjoyment of runners, walkers and cyclists looking to make the most of the city whilst remaining on flatter ground.
With 2 different half marathons, 2 different 10kms, 5km, 2km and 500m Colourburst races there are events for all the family, and if they are not taking part, bring your friends and family to cheer you on. Our start and finish is at Brickfields Park in the middle of the city which also has a children's play ground and is a great spot to sit and enjoy a picnic after the race.
We are very happy to be supporting the ongoing work of Sustrans in maintaining the Two Tunnels by contributing £1 per runner to their charity. Looking to fund raise as part of your run, why not raise money for Sustrans? You will get a lovely free running vest and other goodies. Find our more here. In 2019 we donated £5,254 to Sustrans
Races
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500m Colourburst
Provisional Start Time 09:20
£10.80
Booking for more than 1? -
2 Km Colourburst
Provisional Start Time 09:20
£12.96
Booking for more than 1? -
5km - Wave 1
Predicted Time Less Than 35mins, Provisional Start Time 10:40 Approx
£28.08
UK Athletics (UKA) save £2.00
Booking for more than 1? -
5km - Wave 2
Open to All Abilities. Start Time 10:50 Approx
£28.08
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Hilly Ticket 10km
Open to All. Provisional Start Time 10:40
£34.56
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket 10km Wave 1
Predicted Time Less Than 52mins. Provisional Start Time 11:00 Approx
£34.56
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket 10km Wave 2
Predicted Time Less Than 55mins. Provisional Start Time 11:10 Approx
£34.56
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket 10km Wave 3
Predicted Time Between 55-65mins. Provisional Start Time 11:20 Approx
£34.56
UK Athletics (UKA) save £2.00
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Return Ticket 10km Wave 4
Predicted Time Between 55-65mins. Provisional Start Time 11:30 Approx
£34.56
UK Athletics (UKA) save £2.00
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Return Ticket 10km Wave 5
Predicted Time Between 55-70mins. Provisional Start Time 11:40 Approx
£34.56
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket 10km Wave 6
Open to All. Provisional Start Time 11:40 - 12:00 Approx
£34.56
UK Athletics (UKA) save £2.00
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Return Ticket 10km Wave 7
Predicted Time More Than 60mins. Provisional Start Time 11:40 - 12:00 Approx
£34.56
UK Athletics (UKA) save £2.00
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Hilly Ticket Half Marathon Wave 1
Open to All. Provisional Start Time 10:10
£49.68
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Hilly Ticket Half Marathon Wave 2
Open to All. Provisional Start Time 10:10 Approx
£49.68
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket Half Marathon Wave 1
Predicted Time Less Than 2hrs. Provisional Start Time 10:00
£49.68
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket Half Marathon Wave 2
Open at All. Provisional Start Time 10:20
£49.68
UK Athletics (UKA) save £2.00
Booking for more than 1? -
Return Ticket Half Marathon Wave 3
Predicted Time Greater Than 2hrs. Provisional Start Time 10:30
£49.68
UK Athletics (UKA) save £2.00
Booking for more than 1?
Event Video
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Location
Brickfields Park, The Hollow, Twerton, Bath, UK
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Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst)