Kakunoshin Ohta

Early career

Ohta made his single-seater racing debut in 2018, racing at a single round of the F4 Japanese Championship with MYST [ja]. The following season, he made his full-time debut in the 2019 championship with backing from the Honda Formula Dream Project,^[1] claiming 2 wins but finishing 6th in the standings. That year, Ohta also made a guest appearance in the French F4 championship alongside Honda stablemate Ren Satō, where he finished in the top ten in the three races he competed in and secured one podium. He would also make an appearance in Japan Formula 4 at the end of the year, winning the "All-Japan Deciding Race" over the likes of Satō, Atsushi Miyake, and Riki Ōkusa.^{[citation needed]}

In 2020, Ohta returned to the F4 Japanese Championship, albeit having lost his manufacturer backing.^[1] He regained support from Honda and rejoined the Honda Formula Dream project for 2021 to contest his third season in the championship, eventually finishing fifth in the standings.^[1]

Ohta stepped up to Super Formula Lights for the 2022 season, driving for Toda Racing.^[2] Belying his past record, he impressed immediately, claiming four wins and twelve podiums to finish second in the championship, behind only the returning Kazuto Kotaka.^{[citation needed]}

Super GT

Super Formula

2023

Following his performance in Super Formula Lights, Ohta was promoted to a top-level drive in the Super Formula Championship for 2023, racing for docomo Dandelion Racing alongside Tadasuke Makino and in place of Hiroki Ōtsu.^[3] Ohta struggled during the first half of the season but proved to be a revalation following the summer break, qualifying in the top ten for the first time at the fifth round at Sportsland SUGO and proceeding to qualify in the top four in each of the season's four remaining rounds. He claimed his first podium in the championship in a shortened penultimate round at Suzuka, and followed it up by fending off the challenge of heavily favored championship contender Liam Lawson and eventual series champion Ritomo Miyata to claim his first race victory in the season finale.^[5]

Endurance racing

Ohta was given a chance to test the Acura ARX-06 in the IMSA Sanctioned Test at Daytona International Speedway in November 2024.^[14]

On 11 December 2024, it was announced that Ohta would be driving three races during the 2025 IMSA SportsCar Championship in the 93 Acura Meyer Shank Racing Acura ARX-06, alongside Renger van Der Zande and Nick Yelloly, for the Rolex 24 Hours at Daytona, Six Hours of the Glen at Watkins Glen and the Battle of the Bricks at Indianapolis Motor Speedway, and Alex Palou for the Rolex 24 exclusively.^[15][16]

Karting career summary

Racing career summary

† As he was a guest driver, Ohta was ineligible to score points.
^* Season still in progress. ‡ Team standings.

Complete F4 Japanese Championship results

Complete Formula Regional Japanese Championship Results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Complete Super Formula Lights results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Complete Super GT results

Complete Super Formula results

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

^‡ Half points awarded as less than 75% of race distance was completed.
^* Season still in progress.

Complete IMSA SportsCar Championship results

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

^* Season still in progress.