Do you have what it takes to push yourself to your limits, then keep pushing for 10 days? This event offers an ultra endurance triathlon - 2.4 mile swim, 112 mile bike and 26 mile run - held once a day, every day, for 10 days. Options for double, triple, quad, quin and deca entry. Lake swim, traffic-free 4.5k loop bike course on flat, smooth tarmac, and traffic-free 4.5k loop run on flat, smooth tarmac (with a grass option on the side!), at Dorney Lake, Windsor.