1. In the spell of the Barkley : unravelling the mystery of the world's toughest ultramarathon /: unravelling the mystery of the world's toughest ultramarathon. (2023) Authors: Panhuysen, Michiel Record Type: Book Extent: 1 online resource (208 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. It takes a tribe : building the Tough Mudder movement /: building the Tough Mudder movement. (2017) Authors: Dean, Will Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Solo. (2022) Authors: Tough, Jenny Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗