Tunnel Ultra is a 200-mile ultra-marathon held entirely underground in total darkness. Runners navigate pitch-black tunnels, testing endurance and mental strength in one of the world’s most extreme races.
Browsing: 200-mile challenge
Tunnel Ultra is a 200-mile ultra-marathon held entirely underground in total darkness. Runners navigate pitch-black tunnels, testing endurance and mental strength in one of the world’s most extreme races.