Following on from last year's highly successful event, GRIM Duathlon is back!

GRIM Duathlon is one a 5K Run, 20K Bike, 5K Run off-road duathlon challenge held over the Army's vehicle testing tracks in Aldershot. Enter as an individual or in teams of three competitors over a distance that will seem much longer than it appears. Take on the trails, hills, mud, water, cammo nets, moguls and the sand dune. They are there to be mastered, but all you'll have will be your trainers and mountain bike to compete on the army's vehicle testing tracks will you survive?!

We look after every aspect of this event from the website www.grimchallenge.co.uk to the marketing, online entry and results system, and the event itself.