| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Isao Ikeda | 3 |
References[1] https://www.moriyamakenichi.com/2017/05/blog-post_29.html |
| Ivan Vostinar | 3 |
Ivan Vostinar was a central figure in the New Zealand climbing scene during the 1990s and 2000s. Recognised as one of the earliest "Basiners," Vostinar became known as the "King of Castle Hill" for his extensive development and mastery of the area's limestone boulders. A powerful climber, he was an early adopter of dedicated training, operating under the personal ethos that "the body will adapt." Vostinar established numerous difficult sport routes in the Cave and across the South Island up to 8b+. Beyond his athletic achievements, he authored several definitive regional climbing guides, most notably Rock Deluxe with Kate Sinclair, a comprehensive work in which they climbed an estimated 93% of the 1719 routes and 1561 boulders. |
| Ivar Berg | 3 | |
| Jack Felix | 3 | |
| Jack Ibbertson | 3 | |
| Jack Shipley | 3 | |
| Jacob Handyside | 3 | |
| Jake Townsend | 3 | |
| Jakob Östman | 3 | |
| Jamie Jenkins | 3 | |
| Jamie Lowther | 3 |
References[1] https://gripped.com/profiles/from-el-cap-to-e9-jamie-lowther-and-the-next-generation-of-trad/ |
| Jasmine Hartley | 3 | |
| Jason Pickles | 3 |
References[1] https://www.ukclimbing.com/news/2008/02/page_3_gal_crowns_climber_-_britains_manliest_man-42485 |
| Jay Conway | 3 | |
| Jenya Kazbekova | 3 | |
| Jeppe Lou Larsen | 3 | |
| Jess Walker | 3 | |
| Jim Birkett | 3 |
References[1] https://www.instagram.com/p/CT1d_vHI7HR/ [2] https://www.ukclimbing.com/logbook/ticklists/jim_birkett_first_ascents-2005 |
| Jim Collins | 3 |
Colorado rock climber most active in the 1970s. Now business and management author and guru. |
| Jim Holloway | 3 |
ReferencesJim Holloway is an American climber who played a vital role in the development of bouldering in the United States. Holloway pushed the cutting edge, establishing "Meathook" ~V11/8A and "Trice" V12/8A+ in 1975 (notably before the first established V10/7C+: John Gill's "the Groove" in 1978). In 1977, Holloway made the first ascent of his hardest boulder, "Slapshot" which has yet to have seen a second ascent nearly 50 years later and was potentially in the V13/8B range prior to a hold break. [1] Interview with Climbing.com, July 2007 https://www.climbing.com/news/the-complete-jim-holloway-interview/ |