Ririka Hironaka is a Japanese track and field athlete who specializes in long-distance running. She won the gold medal in the 1500 metres at the 2018 Asian Junior Athletics Championships.
In Japanese national championships she won a bronze medal in the 5000 metres in 2019, and the silver medal over the same distance in 2020; in 2021 she won the gold medal in the 10,000 metres. She represented Japan in the 10,000 metres at the 2020 Summer Olympics, and led at 1000m and 2000m before finishing 7th with a personal best time of 31:00.71.
Hironaka was born in Nagasaki Prefecture, and graduated from Nagasaki Prefectural Nagasaki Commercial High School. She has been a member of the Japan Post women's track and field team since 2019.
As of Sep 20, 2026: 10 000 m 30:39.71 (#97 all-time), 5000 m 14:52.84 (#248 all-time), 2026 season best 9:23.76 (May 17, 2026, National Stadium, Tokyo (JPN)) · Last competition: SEIKO Golden Grand Prix, May 17, 2026, 9:23.76 · 25 years old
JPNWomen