| From | Canada 🇨🇦 |
| Gender | Male |
| Climbing | |
| Hardest Boulder (Worked) | 8B+ |
| Hardest Sport (Worked) | 9a |
Josh Muller is a Canadian climber and owner of Bolder Climbing in Calgary, Alberta.
[1] Interview with Sonnie Trotter, 2024 https://www.youtube.com/watch?v=UfUmNZHEpSg
| From | Canada 🇨🇦 |
| Gender | Male |
| Climbing | |
| Hardest Boulder (Worked) | 8B+ |
| Hardest Sport (Worked) | 9a |
Josh Muller is a Canadian climber and owner of Bolder Climbing in Calgary, Alberta.
[1] Interview with Sonnie Trotter, 2024 https://www.youtube.com/watch?v=UfUmNZHEpSg
[2] https://bolderclimbing.com/profile/josh-muller/