There are 11 upcoming half marathon races in Somerset listed. Next up: Bath Hilly Half & Ultra 10k (Sunday, 15 November 2026), Two Tunnels - February 2027 (Sunday, 21 February 2027), Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst) (Sunday, 21 February 2027).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Bath · Bath Racecourse, Bath, BA1 9, United Kingdom
Bath Hilly Half & Ultra 10k is organised by Team Bath AC in Bath. Entry options: Hilly Half Marathon; Ultra 10K.
£27–£33
See entry options & fees
Bath · Brickfields Park, The Hollow, Twerton, Bath, UK, BA2 1LX
Two Tunnels - February 2027 is organised by Relish The Great Outdoors in Bath. Routes use the former railway tunnels beneath Bath, starting at Brickfields Park.
£32–£46
See entry options & fees
Bath · Brickfields Park, The Hollow, Twerton, Bath, UK
Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst) is organised by Relish Running races in Bath. Entry options: 5km - Wave 1; 5km - Wave 2; Hilly Ticket 10km; Return Ticket 10km Wave 1; Return Ticket 10km Wave 2; Return Ticket 10km Wave 3; Return Ticket 10km Wave 4; Return Ticket 10km Wave 5; Return Ticket 10km Wave 6; Return Ticket 10km Wave 7; Hilly Ticket Half Marathon Wave 1; Hilly Ticket Half Marathon Wave 2; Return Ticket Half Marathon Wave 1; Return Ticket Half Marathon Wave 2; Return Ticket Half Marathon Wave 3. The course surface has not been confirmed.
£28.08–£49.68
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Taunton · Taunton Town Centre
Taunton Half Marathon & Kids Kilometre Fun Run takes place in Taunton on 28 February 2027. Organised by Active South West. Published venue: Taunton Town Centre. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£40
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Bath
A road half marathon through the centre of Bath, starting at Royal Victoria Park.
Price not confirmed
Bath · BA1 1HZ Green Park, Bath, United Kingdom
Bath & Bristol Railway Races; 50km, Marathon, 25km, Half, 10km & 2km Fun Run is organised by Relish Running races in Bath. Entry options: 10km - Kelston Park Return Ticket - Wave 1; 10km - Kelston Park Return Ticket - Wave 2; 10km - Kelston Park Return Ticket - Wave 3; 10km - Kelston Park Return Ticket - Wave 4; 10km - Kelston Park Return Ticket - Wave 5; 10km - Kelston Park Return Ticket - Wave 6; Half Marathon - Bitton Station Return Ticket - Wave 1; Half Marathon - Bitton Station Return Ticket - Wave 2; Half Marathon - Bitton Station Return Ticket - Wave 3; Half Marathon - Bitton Station Return Ticket - Wave 4; Half Marathon - Bitton Station Return Ticket - Wave 5; Half Marathon - Bitton Station Return Ticket - Wave 6; 25km - Bristol Temple Meads Single Ticket - Wave 1; 25km - Bristol Temple Meads Single Ticket - Wave 2; 25km - Bristol Temple Meads Single Ticket - Wave 3; 25km - Bristol Temple Meads Single Ticket - Wave 4; 25km - Bristol Temple Meads Single Ticket - Wave 5; 25km - Bristol Temple Meads Single Ticket - Wave 6; Marathon - Eastville Return Ticket - Wave 1; Marathon - Eastville Return Ticket - Wave 2; Marathon - Eastville Return Ticket - Wave 3; Marathon - Eastville Return Ticket - Wave 4; 50km - Bristol Temple Meads Return Ticket.
£34.56–£70.20
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Bath · Brickfields Park, The Hollow, Twerton, Bath, UK, BA2 1LX
Two Tunnels - June 2027 is organised by Relish The Great Outdoors in Bath. Routes use the former railway tunnels beneath Bath, starting at Brickfields Park.
£32–£46
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Bath · Brickfields Park, The Hollow, Twerton, Bath, UK
Two Tunnels Railway Races (Half Marathon, 10km, 5km, Colourburst) is organised by Relish Running races in Bath. Entry options: 5km - Wave 1; 5km - Wave 2; Return Ticket 10km Wave 1; Return Ticket 10km Wave 2; Return Ticket 10km Wave 3; Return Ticket 10km Wave 4; Return Ticket 10km Wave 5; Return Ticket 10km Wave 6; Return Ticket 10km Wave 7; Return Ticket Half Marathon Wave 1; Return Ticket Half Marathon Wave 2; Return Ticket Half Marathon Wave 3. The course surface has not been confirmed.
£28.08–£49.68
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Langport · Thorney Lakes, TA10 0DW
Thorney Lakes Half Marathon, 10.7km & 5.3km takes place in Langport on 18 July 2027. Organised by Inertia Events. The shorter distances are 10.7 km and 5.3 km. Check the organiser for final race-day instructions.
From £22.50
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Bath · Brickfields Park, The Hollow, Twerton, Bath, UK, BA2 1LX
Two Tunnels - August 2027 is organised by Relish The Great Outdoors in Bath. Routes use the former railway tunnels beneath Bath, starting at Brickfields Park.
£32–£60
See entry options & fees
Bath · Green Park, Green Park, Bath, UK, BA1 1HZ
Bath & Bristol Railway Races - Autumn 2027 is organised by Relish The Great Outdoors in Bath. Races follow the former railway line between Bath and Bristol on a tarmac route.
£25.60–£52
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Work out your target half marathon time and pace.