Will Bosi


Quick Info

From: United Kingdom 🇬🇧
Date of birth: 27th December 1998
Age: 25 years old
Hardest Boulder (Worked): 9A
Hardest Boulder (Flash): 8B+
Hardest Sport (Worked): 9b
Hardest Sport (Onsight): 8b
Hardest Sport (Flash): 8b+
Notable Partnerships
Aidan Roberts

Will Bosi is a climber from Edinburgh in Scotland. He started out as a competition climber, first progressing through national competitions and then European youth comps where he had a string of podium finishes. He struggled somewhat to replicate the successes of the youth comps in the adult circuit, with his best performances being two 4th place finishes in 2019.

Since retiring from comps he has turned to sport climbing and bouldering outdoors, where he has been extremely successful. In 2020 he became the second British climber to climb 9b sport with his repeat of La Capella. He then replicated this success in 2021 with hard first ascents and repeats including among others:

Since 2022 he has focused more on bouldering, where he has also excelled. For example he flashed Charizard 8B+ and, as of 2024, has repeated four 9A boulders:

References

[1] My Climbing Journey April 2023, https://www.youtube.com/watch?v=ZmmMbpCsSuA

[2] https://www.youtube.com/watch?v=Cn1dJNPfAfc

[3] https://www.climbing.com/people/interview-will-bosi-spots-of-time/

Contributors
136 contributions since 6th May 2021.
1 contribution since 21st February 2024.
1 contribution since 3rd December 2024.
1 contribution since 21st February 2024.

Quick Info

From: United Kingdom 🇬🇧
Date of birth: 27th December 1998
Age: 25 years old
Hardest Boulder (Worked): 9A
Hardest Boulder (Flash): 8B+
Hardest Sport (Worked): 9b
Hardest Sport (Onsight): 8b
Hardest Sport (Flash): 8b+
Notable Partnerships
Aidan Roberts

Will Bosi is a climber from Edinburgh in Scotland. He started out as a competition climber, first progressing through national competitions and then European youth comps where he had a string of podium finishes. He struggled somewhat to replicate the successes of the youth comps in the adult circuit, with his best performances being two 4th place finishes in 2019.

Since retiring from comps he has turned to sport climbing and bouldering outdoors, where he has been extremely successful. In 2020 he became the second British climber to climb 9b sport with his repeat of La Capella. He then replicated this success in 2021 with hard first ascents and repeats including among others:

Since 2022 he has focused more on bouldering, where he has also excelled. For example he flashed Charizard 8B+ and, as of 2024, has repeated four 9A boulders:

References

[1] My Climbing Journey April 2023, https://www.youtube.com/watch?v=ZmmMbpCsSuA

[2] https://www.youtube.com/watch?v=Cn1dJNPfAfc

[3] https://www.climbing.com/people/interview-will-bosi-spots-of-time/

Contributors
136 contributions since 6th May 2021.
1 contribution since 21st February 2024.
1 contribution since 3rd December 2024.
1 contribution since 21st February 2024.

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Ascents

119 recorded ascents.

This timeline is missing some ascents where the date of the ascent is unknown. Use the other tabs to view these ascents.
Climb Grade Style Ascent Date Suggested Grade
King Capella 9b Lead | worked 9th Mar 2021 9b+
First ascent. 10 sessions.

Three sessions just to work out the first sequence.

References

[1] https://www.instagram.com/p/CM_596cjKLX/

[2] https://www.youtube.com/watch?v=QXcedGd3R78

[3] https://www.8a.nu/news/king-capella-9b+-fa-and-9b-fa-etc-by-will-bosi-hc28s

La Capella 9b Lead | worked 5th Feb 2020 9b (soft)

Second ascent of a 9b by a brit, and the first british repeat of an established 9b.

La Furia de Jabali 9a+ Lead | worked 4th Feb 2021 9b
Brandenburg Gate 9a+ Lead | worked 7th Nov 2021 9a+ (soft)
First ascent. Belayed by Frances Bensley. 8 sessions.

The climb is very similar to Hubble in a sense but the sequence of moves are a lot more complex and technically demanding. I was stuck for a while on the lower section but once I was able to unlock a sequence, the route came together really quickly for me. [2]

References

[1] https://www.youtube.com/watch?v=CqoVQxpYwlw

[2] https://www.ukclimbing.com/news/2021/11/first_ascent_of_brandenburg_gate_project_by_will_bosi_proposes_9a+-72925

[3] https://www.instagram.com/p/CWAkBKEouWd/

Free at Last 9a+ Lead | worked 25th Jun 2022 9a+
First ascent.

Although there seems to be a lot of holds from the floor, almost everything is an undercut or a side pull. This makes the climbing very technical as the feet are tiny! The climbing is also very intense and powerful as you cannot relax. [2]

References

[1] https://www.instagram.com/p/CflFrCfIxHK/

[2] https://www.ukclimbing.com/news/2022/07/first_ascent_of_scotlands_hardest_route_by_will_bosi_-_free_at_last_9a+-73090

First Ley 9a+ Lead | worked 24th Feb 2021
Mutation 9a+ Lead | worked Oct 2021 9a+
Second ascent. 40 sessions.

The long awaited second ascent after 4 years and 40 sessions.

Finally! This was by far and away my longest project on a route and I am so happy to clip the chains. It is so typical of the redpointing game that the route went down on the last go of the day with little expectation that I would send it! Full credit to Steve McClure on an amazing first ascent and for establishing a climb with such amazing moves. [1]

References

[1] https://www.ukclimbing.com/news/2021/11/first_repeat_of_mutation_9a_by_will_bosi_proposes_9a+-72918

[2] https://www.instagram.com/p/CVxr19WLZRL/

[3] https://www.instagram.com/p/CVxrF8ZoBB8/

[4] https://www.youtube.com/watch?v=MBDqpUKgAyE

Violent New Breed 9a+ Lead | did not finish
Last Night 9a Lead | worked 6th Feb 2021
The Southern Hooligan 9a Lead | worked May 2022
First ascent.

References

[1] https://www.youtube.com/watch?v=IfnkQC9k2ZU

Rainshadow 9a Lead | worked 2nd May 2016
Hubble 9a Lead | worked 25th Oct 2016 9a
Jungle Speed 9a Lead | worked 9th Apr 2017
Hunger 9a Lead | worked 3rd Apr 2018
Estado Crítico 9a Lead | worked 24th Feb 2021
La Ley Indignata 9a Lead | worked 2nd Mar 2021
Northern Lights 9a Lead | worked 11th Jun 2021
Roofolution 9a Lead | worked Mar 2022
Stevolution 9a Lead | worked 17th Mar 2022
A Muerte 8c+ Lead | worked 18th Apr 2017
Evolution 8c+ Lead | worked 4th Jul 2017
Third go.
The Wild West 8c+ Lead | worked 23rd May 2021
Second ascent?

References

[1] https://www.instagram.com/p/CPOUXPzjUOy/

Persian Dawn 8c+ Lead | worked 10th Nov 2021
Hooligan 8c+ Lead | worked 17th Nov 2021 8c+
Reverberance 8c Lead | worked 2023 8c/8c+
Transform 8c Lead | worked 2nd Jul 2015
Fourth ascent.

References

[1] https://www.youtube.com/watch?v=KXepDJnhkaI

Make it Funky 8c Lead | worked 30th Nov 2017
1 session.
Seraphim 8c Solo | worked 19th Nov 2021 8c

Another crazy hard 8 grade route at the tor, maybe a hold broke?? [1]

References

[1] https://www.8a.nu/crags/sportclimbing/united-kingdom/peak-district/sectors/raven-tor/routes/seraphim

[2] https://youtu.be/CJYfOrjj0uo?t=220

El Món de Sofía 8b+ Lead | flash 11th Apr 2017
Land Der Hämmer 8b Lead | onsight 2023
Climb Grade Style Ascent Date Suggested Grade
Alphane 9A Boulder | worked 31st Oct 2022 9A (soft)
Third ascent. Around 13 sessions. Easier than Honey Badger.

Before the first ascent Will had been playing on the boulder with Dave Graham and trying some of the moves. At the time the line seemed too futuristic so he didn't dedicate to it.

After Shawn Raboutou made the first ascent Will got psyched on the line again and headed out with Aidan Roberts, initially just to try the line and then, when he made quick progress, to send it.

In terms of a grade, I personally felt that Honey Badger was more of a challenge for me and proposing a grade for that at the time was daunting as it was my first 8C+. At the cutting edge of climbing, grading feels so much more difficult as the margins are that much finer and personal strengths and preferences really come into play.

Is it 9A? Honestly, I do not know and as I gain more experience of climbing around this grade range I may have a better view, but it is a fantastic line established by Shawn [Raboutou] and I look forward to seeing more experienced climbers comment on where the grade sits. [2]

References

[1] https://www.instagram.com/p/CkdgyVDDNAZ/

[2] https://www.ukclimbing.com/news/2022/11/will_bosi_claims_the_third_ascent_of_alphane-73186

[3] https://www.youtube.com/watch?v=8uBS9OYa2P8

[4] https://www.youtube.com/watch?v=DEUdY5otiqM

Burden of Dreams 9A Boulder | worked 12th Apr 2023 9A
Return of the Sleepwalker 9A Boulder | worked 19th Feb 2024 9A (soft)
Second ascent. 12 sessions.

12 sessions in total, including 3 spent on the stand start Sleepwalker, completed during a single trip to try the boulder.

In the last session before the send, everything just clicked. I was feeling confident, but as the weather forecast looked bleak with a storm closing in, I was only able to take one rest day before heading back out for another session. I still felt quite tired from the previous session so I was unsure about even trying it.

However, after warming up, the moves were feeling great and I decided to give it a go. The first attempt went perfectly up to the sloper but then I really messed up the next move through to the slot and almost dropped it. Somehow, I recovered and hit the last hard move perfectly. Pulling onto the slab was incredible and I had to take a minute to get my breath back before heading up to the top. [1]

References

[1] https://www.ukclimbing.com/news/2024/02/return_of_the_sleepwalker_9a_for_will_bosi-73602

[2] https://www.instagram.com/p/C3nLKdJrZCC/?img_index=1

[3] https://open.spotify.com/episode/3PwOTtkyJJ3IM0A8MxUemD?

[4] https://www.youtube.com/watch?v=8awesjyAGTg

Spots of Time 9A Boulder | worked 19th Oct 2024 9A
Second ascent. 8 sessions.

One of the best hard boulders in the world. Aidan did an incredible job with the first ascent...A Perfect pure line. [3]

References

[1] https://www.instagram.com/p/DBY4dyjtLCn/?img_index=1

[2] https://www.ukclimbing.com/news/2024/10/will_bosi_repeats_spots_of_time_9a-73826

[3] https://www.youtube.com/watch?v=cg5G1rZGyx0

[4] https://open.spotify.com/episode/7nCV4T3tL2t6rbKgIW1yw4?

Honey Badger 8C+ Boulder | worked 10th Aug 2022 8C+ (hard)
The Wild South 8C+ Boulder | worked 26th Apr 2023 8C+
First ascent.

I did one at Raven Tor, Wild South, which I tried a crazy amount of days, but I was ignoring a kneebar for a long time because I didn’t want there to be a kneebar there. Then one day, I tried a kneepad, and it worked really well. I gave that climb 8C because when I started trying the knee, it only took two sessions, and it didn’t feel as bad, but looking back I’m thinking it didn’t feel so bad because I’d spent so much time on the rest of the boulder. So I think that’s probably an 8C+. [2]

References

[1] https://www.youtube.com/watch?v=zf16iiXqOT8

[2] https://www.climbing.com/people/interview-will-bosi-spots-of-time/

Ephyra 8C+ Boulder | worked 8th Nov 2022 8C/8C+
Isles of Wonder SDS 8C+ Boulder | worked 21st May 2023 8C
Second ascent.

Will used different beta to Aidan (keeping the right heel in to match the left hand in) which he felt was more 8C than the 8C+ that Aidan proposed.

References

[1] https://www.youtube.com/watch?v=pcB7xINW-ek

Sleepwalker 8C+ Boulder | worked 20th Jan 2024 8C
3 sessions.

Will was close to climbing the problem on his second session, dropping it with his right hand in the slot and left hand on the sloper. He then did it on the first go of his third session.

References

[1] https://www.instagram.com/p/C2Xf6BpreZ5/?img_index=1

[2] https://www.youtube.com/watch?v=Z44acjCBPMA

Ulls de Bruixa 8C Boulder | worked 11th Feb 2021
Bulbasaur 8C Boulder | worked 7th Apr 2022
First ascent.

References

[1] https://www.youtube.com/watch?v=p7r-5RIdtYU

Trance 8C Boulder | worked 9th Jun 2022 8C
First ascent.

References

[1] https://www.youtube.com/watch?v=WwCBBay_xZM

Beautiful Mind 8C Boulder | worked 14th Jul 2022
First ascent.

References

[1] https://youtu.be/YFy0RRpYNf0

Serenata 8C Boulder | worked 3rd Sep 2020
Foundation's Edge 8C Boulder | worked 23rd Sep 2021
Drift 8C Boulder | worked 27th Mar 2022 8C (soft)
Pata Ledovce 8C Boulder | worked 4th Apr 2022
Ghost Rider 8C Boulder | worked 9th Apr 2022
Tekuté Štěstí 8C Boulder | worked 11th Apr 2022
Iceberg 8C Boulder | worked 12th Apr 2022
Silent Singer 8C Boulder | worked 6th Jun 2022
Outliers 8C Boulder | worked 12th Jun 2022
Forgotten Gem 8C Boulder | worked 6th Nov 2022 8C
Dreamtime 8C Boulder | worked 6th Dec 2022

Will was close on the flash, slipping off after the crux! He finished the problem off on his fourth try.

https://youtu.be/dP5AD_M2dE4?t=236

World at War 8C Boulder | worked Jun 2023 8B+
Ultra Instinct 8C Boulder | worked 8th Jun 2023 8C
Nova 8C Boulder | worked 6th Nov 2023 8C
Second ascent. 6 sessions.

Super happy to send this! Now onto the full line of Terranova :) Grade wise it felt like the hardest or joint hardest boulder ive done in the Czech so i think it deserves the C but time will tell

References

[1] https://www.instagram.com/p/CzWTqA3NED0/?img_index=1

[2] https://www.youtube.com/watch?v=IIxlU0Boplc

Kráter 8C Boulder | worked Nov 2024 8C/8C+
Asagimadara 8C Boulder | worked 5th Dec 2024
Below Zero 8B+ Boulder | worked 16th Jan 2022
First ascent.

References

[1] https://www.instagram.com/p/CYzRlNnIbMB/

Crescendo SDS 8B+ Boulder | worked Sep 2022 8B+
First ascent.

References

[1] https://www.instagram.com/reel/Cih2vUzj35L/

Harambe 8B+ Boulder | worked Jul 2024
Last Wave Goodbye SDS 8B+ Boulder | worked Jul 2024
First ascent. 1 session.

References

[1] https://www.instagram.com/reel/C9AcJ_QNGa1/

Dente de Tubarão Low 8B+ Boulder | worked Sep 2024
First ascent.
Monk Life 8B+ Boulder | worked 19th Oct 2015
Practice of the Wild 8B+ Boulder | worked 27th Sep 2018 8C
Bewilderness 8B+ Boulder | worked 2nd Jun 2020
Fourth go.

References

[1] https://youtu.be/OWDud_bE7G8?t=84

Tomahawk 8B+ Boulder | worked 26th Jun 2020
Superman SDS 8B+ Boulder | worked 6th Jul 2020
Bhai Po 8B+ Boulder | worked 1st Mar 2021
Hazel Grace Stand Start 8B+ Boulder | worked 27th Sep 2021
Gepresster Hase 8B+ Boulder | worked 28th Sep 2021 8B+
Highlander 8B+ Boulder | worked 28th Sep 2021 8B+
Scarred For Life 8B+ Boulder | worked 11th Oct 2021
Little Women 8B+ Boulder | worked 2022 8B (hard)

Desperate!!! was a proper battle reckon it could be 8B+ now

References

[1] https://youtu.be/Y7AoI8zN6cA?t=436

Weeding the Lip 8B+ Lead | worked 15th Mar 2022 8B+
Charizard 8B+ Boulder | flash 7th Apr 2022
Prehistorik 8B+ Boulder | worked 28th Apr 2022
Raggamuffin 8B+ Boulder | worked 13th Aug 2022 8B+

Will broke a foothold on his first go which made the sit unfeasible. However he then did the problem from a crouch start and suggested 8B+ for this.

References

[1] https://www.instagram.com/p/CiFZugbjmly/

Crescendo 8B+ Boulder | worked 24th Aug 2022 8B

Will used some different beta which he found a little easier than the original sequence.

https://www.instagram.com/p/Chr-yz5jPdn/

Big Paw 8B+ Boulder | worked Dec 2022
Graceland 8B+ Boulder | flash 7th Feb 2023 8B (hard)
Sedni Si Na Kost 8B+ Boulder | worked Sep 2023
Mito SDS 8B+ Boulder | worked 2024
Second ascent.

References

[1] https://www.youtube.com/watch?v=QS2DGbvRjZk

Bultitude 8B+ Boulder | worked Apr 2024 8B+
Last Wave Goodbye 8B+ Boulder | worked Jul 2024
1 session.

First go after warming up on the moves.

Gaston LeGume 8B+ Boulder | worked Sep 2024
1 session.
Dune 8B+ Boulder | flash Oct 2024 8B+

Some of the holds have broken/deteriorated since Jana Švecová made the first ascent which is why Will suggested an upgrade.

References

[1] https://www.youtube.com/watch?v=FjMyQjd4lig

Janja SD 8B+ Boulder | flash Oct 2024
Decided 8B+ Boulder | worked 3rd Dec 2024
Hōtō 8B+ Boulder | worked 9th Dec 2024
Snatch Low 8B Boulder | worked 10th Mar 2022
First ascent.

References

[1] https://www.instagram.com/p/Ca-I8QAFAMv/

Giuliano 8B Boulder | worked Sep 2023
First ascent.

References

[1] https://www.youtube.com/watch?v=aTDo92I_8I0

Needle and Rabbit 8B Boulder | worked 24th Aug 2024
First ascent.
Dente de Tubarão 8B Boulder | worked Sep 2024
First ascent.
Isla de Encanta 8B Boulder | flash 19th Sep 2020
Fat Lip 8B Boulder | worked 5th Dec 2021
Voyager 8B Boulder | worked 20th Jan 2022
Home 8B Boulder | worked 23rd Jan 2022
Flipnic 8B Boulder | worked 7th Mar 2022 8B/8B+
4X+1 8B Boulder | flash 7th Mar 2022
Flip Flopera 8B Boulder | worked 7th Mar 2022
Third go.

Third go after getting tantalisingly close on the flash.

References

[1] https://www.instagram.com/p/Caz4gd1N67f/

[2] https://www.youtube.com/watch?v=WUXlT20BcMo

Leda Kost 8B Boulder | worked 25th Mar 2022
Sviní Mor 8B Boulder | flash 27th Mar 2022
Vecchio Leone 8B Boulder | flash 2nd Nov 2022
The Dagger 8B Boulder | flash 6th Dec 2022 8B/8B+
Flash Flood 8B Boulder | flash 8th Dec 2022
Somnolence 8B Boulder | worked 1st Feb 2023 8B (hard)
Godzilla SDS 8B Boulder | flash Jun 2023
Rustam Direct 8B Boulder | flash 7th Nov 2024
Red Snapper 8A+ Boulder | flash 3rd Oct 2021
Dulcifer 8A+ Boulder | worked 3rd Oct 2021
Keen Roof 8A+ Boulder | worked 19th Nov 2021
Helicoidal Flow 8A+ Boulder | worked 2024 8B
Lethal Design 8A+ Boulder | flash 10th Mar 2024
Xuta Cavalo 8A+ Boulder | flash Sep 2024 8A (hard)
Cavaleiro Negro 8A+ Boulder | flash Sep 2024
The Prow 8A Boulder | worked 30th Jul 2017
Climb Grade Style Ascent Date Suggested Grade
Dolphin Wall E8 Lead | ground up 19th Jul 2024
Second go.

Will dropped the crux on first go then fired it off next effort. His first trad fall!

Climb Grade Style Ascent Date Suggested Grade