Bath Two Tunnels Railway Running Races - October

Taking place on a fast, accurately-measured course, the whole route is tarmac with gentle gradients. The gradients are no more than 2% in just a few select places, ensuring this is a mostly flat and fast course.

The route heads steadily uphill towards the Devonshire Tunnel, a 408m long tunnel passing by Bloomfield Open space on the left hand side. There is next a 1k of open-road running along the embankment and towards Combe Down Tunnel.

Here the runners will turn around just 25m before the entrance to the second tunnel to run back downhill towards the finish.

Following the same start as the 5k, runners will head steadily uphill towards the 408m long Devonshire Tunnel. After rounding this tunnel runners will head into the Lyncombe Vale area, a stunningly wooded oasis before reaching the elevated, open embankment, to Combe Down Tunnel.

The race then travels gently downhill Midford Station with Midford Castle on the right. Here, runners make a U-turn around the cones before heading back the way they came towards the start for a photo finish.

This 2-lap, out and back course takes runners along the fast and flat paths of the Greenway path, making it perfect for a PB. The first mile of the course is on the Two Tunnels Greenway shared path along the Linear Park. Up a slight incline to the Devonshire Tunnel, the course gently curves through the tunnel and emerges in Lyncombe Vale through a stunning wooded area. Next is 1k of open running before heading into Combe Down Tunnel which is 1672m in length.

Upon exiting the tunnel, runners head over Tucking Mill viaduct where they can stop for a refreshment at the drinks station. From here, it's all familiar as runners retrace their steps back to the finish line.

The colourburst events are for younger runners to get involved in running. Entrants of all ages can enter and enjoy the colour stations. Each entrant will receive a white t-shirt to ensure maximum colour infiltration. Entrants can run either 2k or 500m.

The actual colourburst is 100% food grade corn starch with coloured dye, it is 100% safe, edible but not at all tasty so eating it is not encouraged, and 100% biodegradable.