IAU 50 km World Championships (organized by the International Association of Ultrarunners who regulate and sanction many world championships) first edition was held in 2005 in Palermo, Italy and the seventh and most recent edition was held in Taipei, Taiwan.
IAU 50 km World Championships (organized by the International Association of Ultrarunners who regulate and sanction many world championships) first edition was held in 2005 in Palermo, Italy and the seventh and most recent edition was held in Taipei, Taiwan.