William Bosi

United Kingdom • Sport climber
    Community profile
  • Grade context: UK
  • Ascents: 97
  • Photos: 1
  • Followers: 10
red pointed
successful ascents
distance climbed

Community Managed Account

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About William Bosi

William Bosi is a professional sport climber from Great Britain. Born in 1998 in 2020 he became the second British to ever climb a route graded 9b. He is also competing in the IFSC World Cup.


Notable ascents

By style By type Diff. band Ascents Hardest ascent
Sport Red point
51 9b+ King Capella about a year ago
15 8b+ El Món de Sofía 5 years ago
14 8a+ Braguetasso 2 years ago
Boulder Send
13 8C Bulbasaur 9 weeks ago
8C Drift
8C Ghost Rider
2 8B+ Charizard
By area Diff. band Ascents Hardest ascent
25 9b+ King Capella about a year ago
Malham Cove
20 9a Rainshadow 6 years ago
13 9a+ La Ley Indignata about a year ago
9a+ First Ley about a year ago
11 8b+ Slow food 8 years ago
Moravský kras
7 8C Drift
8C Ghost Rider
8C Pata ledovce

Climber Performance Rating (CPR) Timelines

For help understanding the CPR timeline chart see the CPR timeline explained article.

Sport timeline (ascents)

Boulder timeline (ascents)

grade pyramids

Sport 79 ascents

9b+ 1
9b 2
9a+ 4
9a 4
8c+ 5
8c 3
8b+ 4
8b 10
8a+ 9
8a 12
7c+ 5
7c 3
7b+ 5
7b 2
7a+ 6
7a 4
  Onsight   Flash   Red point   Other

Grades: French

Boulder 15 ascents

8C 7
8B+ 3
8B 1
8A+ 2
8A 2
  Flash   Send   Other

Grades: Fontainebleau

Trad 1 ascent

5.12c 1
  Red point   Other

Grades: YDS

Climbs with

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