“On October 25th 2025, 55 intrepid runners took on an extraordinary challenge: to run the deepest marathon ever run. Covering 42.2km within the Garpenberg Zinc Mine in Sweden, they descended to a staggering depth of 1,120 metres below sea level. No one had attempted a marathon at this depth before. Participants endured temperatures of 24°C and 72% humidity, in total silence and ran in complete darkness with only their head torches for light.”
“On October 25th 2025, 55 intrepid runners took on an extraordinary challenge: to run the deepest marathon ever run. Covering 42.2km within the Garpenberg Zinc Mine in Sweden, they descended to a staggering depth of 1,120 metres below sea level. No one had attempted a marathon at this depth before. Participants endured temperatures of 24°C and 72% humidity, in total silence and ran in complete darkness with only their head torches for light.”