Welcome to Marlow's first Outdoor gym the Immortal Arena. We specialise in the very best in Functionl fitness workouts and OCR training (Obstacle course racing). We have been running our very successful outdoor bootcamps for 10 years now so the next step was to have a permanent base that caters for people starting out on their fitness journeys, all the way to elite athletes. We are based upon the Longridge Activity centre in Marlow and have a beautiful scenic view of the river and Bisham woods which we use in part of our training which makes our gym one of a kind! You will not find anything similar to what we offer on the internet. Our memberships include full access to all locations and all our classes in Marlow, Henley on Thames and Slough/Cippenham, Finchampstead which cover over 30 sessions a week for you to choose from.