EXTREME RUNNING UK are proud to be putting on this double marathon event in aid of Action on Addiction.

Two marathons over two days. These can be entered individually or together.

The base camp is the fabulous Lee Valley Caravan Park, Dobbs Weir site in Hoddesdon, Hertfordshire.

There are a number of camping options including wigwams and glamping tents and there are a limited number of electric hook ups. Initial booking is for running only as we are still negotiating discounted rate for camping but these options will be available soon.

The marathons themselves will be two different routes which will be mainly offroad.

Each course will be marked out and maps will be available to download onto your GPS watches nearer the time.

There will also be a number of checkpoints along the way with water and other delicious goodies.