Length: 75 km
Location: Stockholm Archipelago, Sweden
ÖTILLÖ is the original Swimrun race, it is the Swimrun World Championship. To finish the ÖTILLÖ course from dawn to dusk, the competitors must be very fit and they must be very fast in and out of the water as there are 50 transitions.
Teams of two race together from island to island (Ö till Ö). The teams swim between the 26 islands and run over them. The total distance is 75 kilometres of which 10 km are open-water swimming and 65 km are trail-running.
ÖTILLÖ is ranked as one of the toughest endurance races in the world by CNN.
To gain entry to ÖTILLÖ you must either qualify in an ÖTILLÖ Swimrun World Series race, have great merits, participate in 7 races in 24 months or just be lucky.