Two Tunnels Races

Two Tunnels Races takes place in Bath, UK, with start and finish at Brickfields Park. The event offers a wide range of distances—from 500m Colourburst up to 50km, plus marathon, half marathon, 10km, 5km, 2km, and 5km Colourburst heats—creating a family-friendly lineup. A standout feature is the course through Bath’s Devonshire Tunnel (408m) and Combe Down Tunnel (1672m), the longest underground section for each distance in the UK.

The tunnels are well lit and surfaced, forming a flat, shared-use path for runners, walkers, and cyclists. The organizer also supports Sustrans with donations and fundraising perks. Visit the organization's website for the most recent information.