Naturalized runner Oh Joo-han is the first South Korean marathon runner to secure his ticket to represent the country at the Tokyo 2020 Olympics.
Oh, who was born in Kenya, finished the 2019 Gyeongju International Marathon in 2-hours 8-minutes and 42 seconds on Sunday, coming in second place.
His time was under the 2-hours 11-minutes and 30-seconds required to qualify for the 2020 Olympics.
It was the Kenyan-born marathoner's first official appearance after becoming a South Korean citizen last year.