| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| John Palmer | 2 |
John Palmer is a prominent figure in New Zealand rock climbing, known for his leadership as past president of the New Zealand Alpine Club (NZAC), chairman and founder of the Aotearoa Climbing Access Trust (ACAT), prolific first-ascensionist, slab-climbing mastery, and creator of the Powerband Podcast. |
| John Salathé | 2 |
Yosemite big wall pioneer and blacksmith. His hand-forged hard steel - and thus reusable - pitons were the technological breakthrough that enabled long routes to be climbed on the granite walls of Yosemite. |
| John Stainforth | 2 |
References[1] https://www.ukclimbing.com/forums/off_belay/john_stainforth-784965 |
| John Yablonski | 2 |
Californian activist and free-soloist. Credited with conceptualising Midnight Lightning and an early proponent of the bouldering sit-start. References[1] Portrait by Dean Fidelman, 1978 https://www.instagram.com/p/Bz_TXWJjs6R/ [2] https://www.climbing.com/people/bouldering-sit-start-john-yablonski/ |
| Jo Montchaussé | 2 | |
| Jonas Pedersen | 2 | |
| Jonathan Reti | 2 | |
| Jon Biddle | 2 | |
| Jon Clark | 2 | |
| Jon Glassberg | 2 |
References |
| José Luis Pereyra | 2 |
References[1] https://publications.americanalpineclub.org/articles/12200307600/The-Tree-of-Life [2] http://www.supertopo.com/climbers-forum/13571/Jose-Pereyra-dies-on-Potrero-Chico |
| Josh Hummel-Newell | 2 | |
| Josh Muehring | 2 | |
| Jos Leenan | 2 | |
| Jules Littlefair | 2 | |
| Julia Duffy | 2 | |
| Justen Sjong | 2 | |
| Kai Theune | 2 | |
| Katrin Lehmann | 2 | |
| Katy Forrester | 2 |