Eve of the Stalker

So tomorrow night I embark on, hopefully the first of many, The Mighty Deer Stalker.
It's a trail run/race of 10 'and the rest' Km. it works out to be miles and miles of hill trails, rivers, downhill bike tracks, tunnels, water, skree, 8ft walls, water and slippery logs.
Nervous but ready.... I think.... Jelly babies are going to help me through.