Sweden to Host ‘World’s Deepest Marathon’ in Underground Mine » Explorersweb

Sweden to Host ‘World’s Deepest Marathon’ in Underground Mine » Explorersweb

With record-breaking summer heat becoming the norm each year, running endurance events beneath the beating sun becomes a tough — and dangerous — proposition. Just this spring, one runner died and others were hospitalized during a California half-marathon in May. Another died last year during a Disneyland half-marathon amid rising numbers of heat-related deaths in the U.S. Even Paris had to make big changes to ensure athletes didn’t overheat duri…

Boliden to host World’s Deepest Marathon

In October 2025, 60 amateur runners from across the globe will take part in a world first: a full marathon 1120 m below sea level, hosted in Boliden’s Garpenberg zinc mine in Sweden.