In a bold blend of extreme sports and subterranean endurance, 60 elite runners are preparing to take part in the world’s deepest officially recognized marathon, held 4,300 feet (1,300 meters) below the Earth’s surface inside an active Swedish iron mine.
The groundbreaking event, dubbed the “Mine Marathon”, will unfold in the labyrinthine tunnels of LKAB’s Kiruna Mine, one of the world’s largest and deepest underground iron ore mines. Participants will face oppressive darkness, high humidity, rugged terrain, and elevated temperatures, turning every mile into a battle against both physical strain and psychological stress.
A Race Like No Other
Organizers say the marathon isn’t just about pushing physical limits — it’s about reimagining the sport itself. With no natural light, limited airflow, and tight turns through raw rock tunnels, every runner will require a headlamp, breathing precautions, and special gear to cope with the mine’s environment.
“This isn’t just a race — it’s an expedition,” said race director Erik Norlund. “It challenges not only endurance, but how athletes adapt to one of the most hostile race conditions on Earth.”
Global Attention on Sweden’s Mining Town
The event has drawn global attention from adventure runners, endurance athletes, and environmentalists. In addition to athletic challenges, the marathon also aims to raise awareness about sustainable mining, climate resilience, and pushing human limits in extreme environments.
This surreal race will redefine what it means to go the distance — and how far down runners will go in the name of adventure.
