Marathon Course Description - (2 Laps, Half Marathon (1 Lap)There is a cut off time of 3hrs to complete 1 lap of the marathon, approximately 13.3 miles.
The first mile of the course is on the Two Tunnels
Greenway shared path along Linear Park. It is on a slight incline up to
Devonshire Tunnel which is the first of the Two Tunnels. Devonshire
tunnel is 408m long and is well lit. The course gently curves round to
the left through the tunnel. Next runners emerge in Lyncombe Vale and
run along the elevated embankment through a very pretty wooded area.
After 1km of running along the top of the embankment it is time to enter Combe Down Tunnel which is 1672m long making this the foot race with the longest underground section in Britain! The Northern side of Combe Down tunnel is 50ft higher than the Southern portal which ensures a cool breeze circulates through the tunnels. The tunnels themselves are lined with a combination of bricks and the exposed limestone rock through which the tunnels were originally bored.
Upon exiting Combe Down Tunnel runners head over Tucking Mill viaduct. Runners turn left after crossing the viaduct and towards the steps to Tucking Mill reservoir. Following the public footpath leads runners onto Tucking Mill Lane past the house of the world renowned Geologist William Smith who produced the first Geologiclal Map of the country. Tucking Mill Lane is not being closed by the race so there may well be traffic along this section. Please be careful, stick to the left hand side of the road, and follow the direction of the marshals.
The Marathon race forms part of the Two Tunnels Challenge. All runners who complete the Two Tunnels Challenge will be awarded with a special laser engraved glass trophy to mark their achievement (shown below). Plus, the three medals from the three individual events.
Two Tunnels Challenge = 10km + Half Marathon + Marathon
You decide the dates; Two Tunnels 10km (3rd March OR 12th May OR 14th July) + Two Tunnels Half Marathon (12th May OR 14th July) + Two Tunnels Marathon (18th August)