William Bosi
Scottish rock climber (born 1998)
William Bosi
William Bosi (born 27 December 1998) is a Scottish professional rock climber specializing in sport climbing, bouldering and competition climbing. Bosi was the first climber to have completed five V17 (9A) boulder problems including Alphane in 2022, Burden of Dreams in 2023, Return of the Sleepwalker and Spots of Time in 2024 and Realm of Tor'ment in 2025. Bosi is the first British climber to climb a 9b+ sport climb (Excalibur).
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