, Florida. The best 100 triathletes in Wimbleball earn themselves a place for the American race, which could ultimately open a door to the prize of a place at the Ironman World Championships finale in Hawaii.The triathlon starts with a swim in the flooded

'd expected and I did not have time for all my energy drink. Lessons learned."Helen Jenkins, 2008 ITU World Champion"I once had a problem at the Windsor Triathlon with heat exhaustion - I hadn't drunk enough the day before the race, which was freakishly hot. I

. "Duathlons can be a good gauge of performance, and they can replace 'threshold' workouts with something more interesting" says PhysFarm Coach Dr Philip Skiba.Duathlon, which has national, European and world championship races, is governed by British Triathlon

placed on it during the Olympic-distance triathlon. "To avoid burning out use race nutrition during training," says Fiona Hoare, who has competed in the World Championships. "If you're hungry or thirsty it's too late, so drink every 20 minutes, up to a

to.Not keeping a training diaryIt's a simple task that can offer huge benefits, so why aren't you keeping a training diary?"It's vital, but it requires discipline," says triathlete Jenny O'Brien, who has represented Britain at the World Triathlon