Jonathan Siegrist

Also known as: J Star

Quick Info

From: USA 🇺🇸
Date of birth: 27th August 1985
Age: 40 years old
Gender: Male
Height: 167 cm
Hardest Boulder (Worked): 8B+
Hardest Sport (Worked): 9b
Hardest Sport (Flash): 8c

Contributors
267 contributions since 18th May 2021.
NHS
22 contributions since 16th January 2026.
8 contributions since 16th December 2024.
7 contributions since 4th August 2025.
4 contributions since 21st September 2024.
2 contributions since 7th December 2025.

Quick Info

From: USA 🇺🇸
Date of birth: 27th August 1985
Age: 40 years old
Gender: Male
Height: 167 cm
Hardest Boulder (Worked): 8B+
Hardest Sport (Worked): 9b
Hardest Sport (Flash): 8c

References

[1] https://www.youtube.com/watch?v=ajSuf5s2yyo

Contributors
267 contributions since 18th May 2021.
NHS
22 contributions since 16th January 2026.
8 contributions since 16th December 2024.
7 contributions since 4th August 2025.
4 contributions since 21st September 2024.
2 contributions since 7th December 2025.

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No pics or vids yet.


Ascents

55 recorded ascents.

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Climb Grade Style Ascent Date Suggested Grade
Jumbo Love 9b Lead | worked 17th May 2018 9b

Fought with every ounce in my body... a feeling I will never forget! Absolutely incredible route with no place to hide. Resistant like hell. So freaking excited about this send! Used one knee bar in the bottom pitch, direct at the finish like Adam.

Second ascent.
First ascent.

The direct finish to Nu World that I've dreamt about for years! After coming back from Spain I starting working hard on this, training for it, and deciphering the intricate beta in the upper two thirds. I was really unsure if I'd have a good shot before leaving town again but in some of the best shape of my life, with a huge and memorable fight in the second half, I climbed it! Very resistant long boulder problem to start, next is a fins style vertical crux, and finally seven bolts of all-out-pumpy and technical climbing with no good rest to the finish. I used one right knee to clip the second bolt. Without question, for my height, and my methods, this route is one of my hardest. It was a total joy to learn this route and climb it. Grateful! [1]

References

[1] https://www.8a.nu/crags/sportclimbing/united-states/5g/sectors/white-wall-sector/routes/event-horizon/

First ascent.
Power Inverter 9a+ Lead | worked 2nd Dec 2015

A defining moment in my climbing. Very emotional, a huge step forward. Much harder than anything else I've done.

Chaxi 9a+ Lead | worked 25th Apr 2017
Bone Tomahawk 9a+ Lead | worked 28th Mar 2018 9a+ (soft)
First ascent.
Nu World 9a+ Lead | worked 7th Oct 2020
First ascent.
Full Metal Brisket 9a+ Lead | worked 29th Nov 2020
First ascent.
Ace of Spades 9a+ Lead | worked 1st May 2021 9a+ (soft)
First ascent.
Selecció Anal 9a+ Lead | worked 22nd Mar 2022
Harder than Diarrhea Mouth.
Fourth ascent.

Very cool to revisit this crag after 12 years! TC [Tommy Caldwell] is forever a massive inspiration for me - I didn't realize how important it would feel to climb on this route. Went fully A Muerte after getting through the bottom crux for the first time. On the grade, for me personally, the route does not compare to the 9b I have done or tried - that being said it is still one of the hardest in Colorado for sure.

References

[1] https://www.youtube.com/watch?v=_QfDDnFS6T8

Second ascent.
Second ascent.

A humbling test of perseverance for me. First a knee injury back in September on our first day here, and then just as I was recovering, wet holds and record breaking rain over and over for 5 weeks. We extended our trip twice. Fought hard to stay ready mentally and physically for the right moment. Honestly can't believe it all worked out! One of the best, most demanding and scariest sport routes I have climbed. Easily 9b for me, quite obviously harder than the other 9a+ here... But I'll keep it a sandbag out of respect for Ceuse. [1]

References

[1] https://www.8a.nu/crags/sportclimbing/france/biographie/sectors/biographie-8faa4/routes/letrange-ivresse-des-lenteurs

[2] https://www.instagram.com/p/DB7EAyVMu_6/

[3] https://www.lasportivausa.com/blog/jonathan-siegrist-climbs-amazing-french-limestone/

Hard Twisted 9a+ Lead | worked 6th Jun 2025
Third ascent.
First ascent.
Kryptonite 9a Lead | worked 3rd Sep 2010
First ascent.

Climbing on the route fresh and having the opportunity to think over the route's difficulty, in addition to the unfortunate new discovery of a knee bar mid-crux has lead me to believe that 14c is a more accurate suggestion. Colorado, and certainly Rifle, have a reputation for stiff grades that I feel I should uphold. Like I've mentioned previously, I think that the best thing we can do with grades is take them lightly, remain honest and strive to keep consistency within an area. To me, 'Kryptonite' remains the standard for 14d on the Western Slope and as much as I would have liked it to, Shadowboxing can not rival it's difficulty. [1]

References

[1] http://www.jonathansiegrist.com/2011/10/shadowboxing.html

Moonshine 9a Lead | worked 30th Jun 2013 9a (soft)
Fourth go.
Bachelor Party 9a Lead | worked 23rd Feb 2017
Second ascent.
Life of Villains 9a Lead | worked 16th Mar 2019
First ascent.
Diarrhea Mouth 9a Lead | worked 15th Jul 2020 9a (soft)
Spirit Quest 9a Lead | worked 1st Sep 2022
First ascent.
First ascent.
First ascent. 4 sessions.

References

New World Order 8c+ Lead | worked 6th Jun 2011
First ascent.
Bad Girl's Club 8c+ Lead | worked 1st Sep 2011
Second ascent.
Cornerstone 8c+ Lead | worked 2nd Oct 2025
Fifth go.
Fish Eye 8c Lead | flash 17th Dec 2015
Directa Jabalí 8c Lead | worked 6th Nov 2017
Second go.
No Country for Old Men 8c Lead | flash 15th Aug 2024
To Bolt or Not to Be 8b+ Lead | worked 14th May 2010
Climb Grade Style Ascent Date Suggested Grade
Jade 8B+ Boulder | worked 27th Jul 2015
Climb Grade Style Ascent Date Suggested Grade
Climb Grade Style Ascent Date Suggested Grade