Extreme Energy is delighted to announce a one day 25 km challenges. These events are open to walkers and runners, young and old, experienced or in-experienced. Our objective is to create a 25km “intro” Half Ultra Distance Event. We have made everything easy for our competitors on a scenic trail route, which is easily accessible by road and rail. It is fully marked and very well supported en-route. Why an “intro” half ultra? Whilst the experienced competitor will enjoy taking part in these events, we wanted to attract more people into the great world of ultra running by putting on an all encompassing one day event. The Chilterns are a stunning part of the country side and the route, whilst hilly in places, has great views and a mixture of terrain.