Seo was born into a family of climbers. She started climbing in 2008. Her father owns a climbing gym in Seoul.
Climbing career
Rock climbing
In 2018, at age fourteen, Seo redpointed a 9a (5.14d) sport climbing route called Bad Girls Club at the Wicked Cave at Rifle, Colorado.[2]
On November 22, 2022, Seo redpointed the famous 9a+ (5.15a) Spanish sport climb, La Rambla, becoming the second woman to redpoint the route.[3][4]
Competition climbing
In 2019, she made her IFSC Climbing World Cup debut and won the Lead World Cup season title ahead of Slovenian Janja Garnbret and Japanese Natsuki Tanii by winning 4 gold, 1 silver, and 1 bronze medals in six out of six lead events.[5]
Then she participated in the Asian Championships and placed first in both lead and bouldering disciplines.[6]