Few marathons require helmets. None demand 3D route mapping. And no marathon in history has ever been run this deep below the earth’s surface. Set up by learning and development company BecomingX, in collaboration with the International Council on Mining and Metals (ICMM) and our industry leading hosts Boliden, the World’s Deepest Marathon aims to showcase human potential, demonstrating that we all have the capacity to achieve extraordinary things. It is also an opportunity to showcase modern mining: a critical, safe, and socially conscious industry where cutting-edge operations have made it possible to run a full marathon 1,120 below sea level (1,312m underground).

This event is a unique opportunity to do something that has never been done before – to run a marathon 1,400m below sea level and become a Guinness World Record holder. This is a challenging event, but has been designed to be suitable for runners who have never completed a marathon before. Here’s what you can expect:

This pioneering event is being hosted by Boliden, owners of Garpenberg Mine and the headline sponsor of the ‘World’s Deepest Marathon’. As one of the world’s safest mining companies, Boliden has ensured that safety remains paramount. Runners will be equipped with personal protective equipment and have access to rescue chambers, adhering to stringent protocols designed to protect them in this unique subterranean environment.

Organised by BecomingX, co-founded by adventurers Bear Grylls and Paul Gurney and the International Council for Mining and Metals, this historic endeavour captures the spirit of exploration and human resilience, and proves that limits can always be redefined. From the depths of the earth, these trailblazers will push beyond physical and mental boundaries to make history in one of the most extreme environments imaginable.