Tunnel Ultra: The mind-bending 200-mile ultra-marathon in the dark

January 17, 2023

The Tunnel Ultra is a race like no other. It’s easy to find longer events. Some even involve repeating the same loop for days on end. But nowhere else can you take part in a race so twisted that you spend more than two days in darkness doing a one-mile shuttle run 200 times, or so punishing that one runner went temporarily blind – then thanked the race organiser for the privilege. BBC