Enduroman

The Enduroman Arch to Arc Triathlon is an ultra-distance triathlon. The triathlon starts with an 87 mile run (140km) from London's Marble Arch to Dover on the Kent coast, then a cross-channel swim (shortest distance 21 miles/33,8km) to the French coast, and finishes with a 180 mile (289,7km) bike from Calais to the Arc de Triomphe in Paris. The clock starts at Marble Arch, London and stops at Arc de Triomphe, Paris. Only 11 athletes have ever completed the challenge, the current record being held by Enduroman's Mark Bayliss and currently standing at 73 hours and 39 minutes (and Mark wasn't wearing a wetsuit for the cross-channel swim). Rachael Cadman finished in 97h37 on 23 August 2011 becoming the first female finisher (and fourth fastest overall).