World Cup Rio de Janeiro 2026

The World Cup Rio de Janeiro is an ultra-distance triathlon series held in Rio de Janeiro, Brazil. It offers race distances from a single full distance up to a 20x full distance. While a specific month or season isn't listed, the format is defined: the 1x race includes a 3.8 km swim, 181.77 km bike, and 42.004 km run. Longer versions extend this challenge into multi-day endurance events. The swim takes place in a 50 m pool. The bike and run courses are officially measured, nearly flat, closed to traffic, and utilize asphalt or slabs. The most demanding option features a 76 km swim, 3,605.08 km on the bike, and 844.044 km running, requiring lights on course and allowing a 384-hour overall time limit. Daniel de Oliveira, an athlete with experience in races from Double to Double Deca Ultratriathlon, founded the event.