is a Japanese racing driver set to compete for Nat Team KCMG in Kyojo Cup, which she won in 2022 for Fujita Yakkyoku Racing.
Career Karting After competing in local karting championships, Onaga joined Scuderia Okinawa alongside Hibiki Taira to compete in the FS-125 class of the 2017 All-Japan Karting Championship. In 2023, Onaga won the All-Japan EV Karting Championship.
Car racing Kyojo Cup debut and early success (2019–2021) After winning the Kart race and finishing third overall in the TGR-sponsored Dual Attack event, Onaga was given the TGR Woman Award and a drive in both the 2019 Toyota Gazoo Racing GR86/BRZ Cup and the Netz Cup Vitz Race. Following her appearance in the Vita of Asia race, Onaga made her debut in Kyojo Cup, entering the second round of that year's season. On her debut, Onaga started second and overtook Hinako Muramatsu in the closing stages of the race to take her maiden win in the series by less than three tenths. Despite finishing runner-up in the final two races of the season, Onaga lost out on the title by one point after Muramatsu won the final race and the title.
In 2020, Onaga returned to Kyojo Cup. In the opening race of the season, she passed Ai Miura on the opening lap and won the red-flagged race by over seven seconds. Despite ending the season with a win in the finale, she lost out on the title to Miura by thirteen points. Returning to Kyojo Cup for her third season, Onaga joined Fujita Pharmacy Racing after spending two years as a privateer. After a slow start to the season, Onaga won the final two races of the season and finished second in the standings to Shion Tsujimoto.
Maiden Kyojo Cup title and first races abroad (2022–present) Onaga stayed with Fujita Pharmacy Racing in 2022. She won the first three races of the season and clinched her maiden Kyojo Cup title with a race to spare. In 2023, Onaga joined RSS in Kyojo Cup. Following a third place in the opening round and finishing second to Ai Miura by 78 milliseconds in round two, Onaga won the final two races of the season but ended the season runner-up to Miura in the points.
In early 2024, RSS announced that Onaga would remain with them for a double program in Kyojo Cup and TGR GR86/BRZ Cup. She won two races in Kyojo Cup and led the standings ahead of the final round, but following a lock-up which sent her to the back of the field on the opening lap, Onaga wasn't able to score points and ended the season runner-up in points to Aimi Saito. During 2024, Onaga raced in two rounds of the Toyota GR Cup North America, scoring a best result of 19th at Barber Motorsports Park.
On 25 December 2024, it was announced that Onaga would join Toyota-supported Kids com Team KCMG ahead of her seventh season in Kyojo Cup. In early 2025, OTG Motor Sports announced Onaga as a driver for them in Japanese F4 and in the TGR GR86/BRZ Cup. In Kyojo Cup, Onaga scored a lone win in the second Kyojo Final of the year and scored six more podiums to end the year runner-up in points, while in Japanese F4, Onaga scored a best result of 13th in the season-opening race at Fuji.
The following year, Onaga returned to Nat Team KCMG to continue in Kyojo Cup. In parallel, Onaga returned to OTG Motor Sports for to race in the F4 Japanese Championship and the TGR GR86/BRZ Cup.
Personal life Onaga is the daughter of Tatsuya Onaga, who opened the Kukuru Yomitan Circuit in 2002, ran Scuderia Okinawa and most recently opened Motorsports Multi-Field Okinawa in 2021.
Karting record Karting career summary Season Series Team Position2017Regional Kart Championship West Region – FS-125Scuderia Okinawa7thAll-Japan Regional Kart Championship Western Region – FS-125 Class6th 2023All-Japan Karting Championship – EVRSS with TOM'S-EV Racing1stSources:
Racing record Racing career summary SeasonSeriesTeamRacesWinsPolesF/LapsPodiumsPointsPosition2019 Netz Cup Vita Race – CVT DualAttack 1 0 0 0 1 N/A2nd Vita of Asia Exgel Motorsport 2 0 0 0 0 / Kyojo Cup Miki Onaga 3 1 0 1 3 612nd FCR-VITA 1 0 0 0 0 8 13th2020 Kyojo Cup Miki Onaga 4 2 0 1 3 672nd FCR-VITA 2 0 0 0 0 16 7th Super Taikyu – ST-4 Kobe Toyopet Motor Sports 3 0 0 0 1 44.5‡ 5th‡ JAF Formula 4 Fujita Pharmacy Racing 1 0 0 0 0 2 23rd JAF Formula 4 – Grand Champion S Class 2 0 0 0 0 26 17th2021 Kyojo Cup Fujita Yakkyoku Racing 4 2 0 1 2 57.52nd FCR-VITA 2 1 1 0 1 30 5th JAF Formula 4 9 0 0 0 0 35 7th JAF Formula 4 – Grand Champion S Class 9 0 0 0 0 108 8th Super Taikyu – ST-2 Kobe Toyopet Motor Sports 6 4 0 1 4 100‡3rd‡2022 Kyojo Cup Fujita Pharmacy Racing 4 3 4 4 3 73.51st FCR-VITA 4 0 0 0 3 522nd Toyota Gazoo Racing GR86/BRZ Cup KIM International 6 0 0 0 0 0 NCAll-Japan EV-GP Series – General Team Taisan 1 0 0 0 0 10 NCAll-Japan EV-GP Series – EV-1 1 0 0 0 0 10 NC2023 Kyojo Cup RSS 4 2 0 2 4 802nd FCR-VITA 4 0 0 0 3 412nd Toyota Gazoo Racing GR86/BRZ Cup 5 0 0 0 0 0 NC2024 Kyojo Cup RSS 6 2 0 1 4 772nd FCR-VITA 3 0 0 0 1 25 4th Toyota Gazoo Racing GR86/BRZ Cup 6 0 0 0 0 0 NC Toyota GR Cup North America Hattori Motorsports 4 0 0 0 0 0 N/A2025 Kyojo Cup Kids com Team KCMG 10 1 0 4 7 982nd F4 Japanese ChampionshipOTG Motor Sports 14 0 0 0 0 0 26th Toyota Gazoo Racing GR86/BRZ Cup 7 0 0 0 0 0 NC 2025–2624H Series Middle East - TCXToyota Gazoo Rookie Racing 1 0 0 0 1 36 NC 2026 Kyojo Cup Nat Team KCMG F4 Japanese Championship OTG Motor Sports Sources:
‡ Team standings
Complete Kyojo Cup results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Entrant 1 2 3 4 5 6 7 8 9 10 Pos Points 2019 Privateer FUJ1 FUJ2 FUJ3 FUJ42nd61 2020 Privateer FUJ1 SUZ FUJ2 FUJ32nd67 2021 Fujita Yakkyoku Racing FUJ1 SUZ FUJ2 FUJ32nd57.5 2022 Fujita Pharmacy Racing FUJ1 FUJ2 FUJ3 FUJ41st73.5 2023 RSS FUJ1 FUJ2 FUJ3 FUJ42nd80 2024 RSS FUJ1 FUJ21 FUJ22 FUJ3 FUJ4 NC1 NC2 FUJ52nd77 2025 Kids com Team KCMG FUJ1SPR FUJ1FIN FUJ2SPR FUJ2FIN FUJ3SPR FUJ3FIN FUJ4SPR FUJ4FIN FUJ5SPR FUJ5FIN 2nd 98 2026 Nat Team KCMG FUJ1SPR FUJ1FIN FUJ2SPR FUJ2FIN FUJ3SPR FUJ3FIN FUJ4SPR FUJ4FIN FUJ5SPR FUJ5FIN 4th* 13*
Complete F4 Japanese Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DC Pts 2025 OTG Motor Sports FUJ11 FUJ12 FUJ13 FUJ21 FUJ22 SUZ1 SUZ2 SUG1 SUG2 SUG3 AUT1 AUT2 MOT1 MOT2 26th 0 2026 OTG Motor Sports FUJ11 FUJ12 OKA1 OKA2 FUJ21 FUJ22 SUZ1 SUZ2 SUG1 SUG2 AUT1 AUT2 MOT1 MOT2
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