The World's Highest Marathon, a collaboration between BecomingX and Adventure Alternative, challenges participants to complete a full 42.2 km course across the stunning Bolivian Altiplano. Kicking off at an elevation of 4,810 meters, this extreme event is surprisingly accessible, as the organizers provide a comprehensive two-week acclimatization program to ensure runners are prepared for the altitude. Although the setting is intense, the official guidelines state that you do not need to be an elite athlete or a seasoned mountaineer to register for the 2027 expedition.
