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

One runner was chased by monsters. Another went blind. In the darkness, nothing is as simple as it seems.

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

UTMB: Up close and personal at the biggest, wildest trail race in

Sam Heward on LinkedIn: Running 200 miles in a tunnel - the mind

John Harris on LinkedIn: #miniject #istar #migs #glaucoma

David Harvey Wins 200-Mile Ultra in Darkness The Tunnel”

The Tunnel Ultra 200-Mile Long Race in the Darkness

Inspiration - The Ultrarunner.com

The Tunnel Ultra 200-Mile Long Race in the Darkness

The Tunnel 200 Mile Ultra Marathon Timelapse Photos of Runners