The Klagenfurt Ironman Austria is one of the most challenging triathlons in the world. Held annually in July, the event attracts the world's best triathletes to compete in the stunning setting of Lake Wörthersee. The free entry and opportunity to watch the athletes push themselves to their limits make it a great choice for budget-conscious travellers looking for some sporting inspiration. The event also features live music, food and drink stalls, and a range of other activities for visitors to enjoy.