John Yablonski

Also known as: Yabo

Quick Info

From: USA 🇺🇸
Gender: Male
Hardest Trad (Worked): E5
Notable Partnerships
John Bachar

Californian activist and free-soloist. Credited with conceptualising Midnight Lightning and an early proponent of the bouldering sit-start.

References

[1] Portrait by Dean Fidelman, 1978 https://www.instagram.com/p/Bz_TXWJjs6R/

[2] https://www.climbing.com/people/bouldering-sit-start-john-yablonski/

Contributors
11 contributions since 26th November 2025.
3 contributions since 28th May 2021.

Quick Info

From: USA 🇺🇸
Gender: Male
Hardest Trad (Worked): E5
Notable Partnerships
John Bachar

Californian activist and free-soloist. Credited with conceptualising Midnight Lightning and an early proponent of the bouldering sit-start.

References

[1] Portrait by Dean Fidelman, 1978 https://www.instagram.com/p/Bz_TXWJjs6R/

[2] https://www.climbing.com/people/bouldering-sit-start-john-yablonski/

Contributors
11 contributions since 26th November 2025.
3 contributions since 28th May 2021.

Lists


Pics + Vids

No pics or vids yet.


Ascents

2 recorded ascents.

This timeline is missing some ascents where the date of the ascent is unknown.
Sort
Climb Grade Style Ascent Date Suggested Grade
Climb Grade Style Ascent Date Suggested Grade
Climb Grade Style Ascent Date Suggested Grade
Leave it to Beaver E5 Solo | worked
The Regular North Face E4 Lead | worked
First ascent.

Free to the last pitch.

Climb Grade Style Ascent Date Suggested Grade