Vätternrundan is the world’s largest recreational bike race, arranged by the non-profit association Motala AIF since 1966. Every year about 36 000 cyclists from all over the world participate in the races during one week of cycling events. Vätternrundan includes Vätternrundan 315 km, Halvvättern 150 km, Tjejvättern 150 km, Vätternrundan 100 km, MTB-Vättern, Minivättern and the arena competition Vättern Bike Games. Vätternrundan is part of the Swedish folklore. In 2013 Vätternrundan was the first sports event in Sweden to get certified by ISO 20121 standard for sustainable events.