The was the 58th MFJ Road Race season of the All Japan Road Race Championship since the series-format started, and the 63rd consecutive year since the first All Japan race was held after the MFJ was established. The season began at Suzuka on 9 March, and concluded on 27 October at the 56th MFJ Grand Prix at Suzuka Circuit.

ST600 rider Ryota Haga was killed during the Autopolis race.

Yuki Okamoto, Yuki Kunii, Keito Abe and Hiroki Ono were the JSB1000, ST1000, ST600 and J-GP3 champions, respectively.

Calendar The updated calendar was released on 21 November 2023.

Round Circuit Location Date ClassMap of circuit locations 1 Suzuka Circuit Suzuka, Mie 9–10 March JSB1000 2 Mobility Resort Motegi Motegi, Tochigi 13–14 April JSB1000, ST1000, ST600, J-GP3 3 Sportsland Sugo Murata, Miyagi 25–26 May JSB1000, ST1000, ST600, J-GP3 4 Tsukuba Circuit Shimotsuma, Ibaraki 16 June J-GP3 5 Mobility Resort Motegi Motegi, Tochigi 24–25 August JSB1000 6 Autopolis Hita, Ōita 7–8 September JSB1000, ST1000, ST600, J-GP3 7 Okayama International Circuit Mimasaka, Okayama 28–29 September JSB1000, ST1000, ST600, J-GP3 8 Suzuka Circuit Suzuka, Mie 26–27 October JSB1000, ST1000, ST600, J-GP3  – Double-header

Race results Round Event J-GP3 winner ST600 winner ST1000 winner JSB1000 winner 1 Suzuka 2&4 Race Katsuyuki Nakasuga 2 Superbike Race at Motegi Rei Wakamatsu Keito Abe Yuki Kunii Katsuyuki Nakasuga Katsuyuki Nakasuga 3 Superbike Race at Sugo Hiroki Ono Keito Abe Yuki Kunii Katsuyuki Nakasuga Keito Abe Yuki Okamoto 4 Tsukuba Round Hiroki Ono 5 Motegi 2&4 Race Ryo Mizuno 6 Superbike Race in Kyushu Hiroki Ono Keito Abe Taiga Hada Yuki Okamoto Yuki Kunii Yuki Okamoto 7 Superbike Race at Okayama Rei Wakamatsu Keito Abe Yuki Kunii Yuki Okamoto 8 56th MFJ Grand Prix at Suzuka Hiroki Ono Yuta Date Yuki Kunii Ryo Mizuno Ryo Mizuno

Teams and riders

JSB1000 participants Team Constructor Motorcycle Tyre Rider Rounds Team Tatara Aprilia Aprilia RSV4 1100 Factory 22 Masahiro Shinjo 1–3, 6–8 Sanmei Team Taro Plusone BMW M1000RR 12 Taro Sekiguchi 1–3, 5–8 Tone RT Syncedge4413 BMW 21 Tomoya Hoshino 1–3, 5–8 37 Ainosuke Yoshida 1, 5 38 Zechariah Dzegede 1 Ducati Team Kagayama Ducati Panigale V4 R 3 Ryo Mizuno 1–3, 5–8 Astemo Honda Dream SI Racing Honda CBR1000RR-R 32 Kohta Nozane 1–3, 5–8 36 Kazuma Watanabe 1 Honda Dream RT Sakurai 9 Kazuki Ito 1–3, 5–8 20 Daijiro Hiura 1, 8 Honda Suzuka Racing Team 17 Yuki Sugiyama 1–3, 5–8 5 Yudai Kamei 1 Japan Post Honda Dream TP 33 Takumi Takahashi 1–3, 5–8 Murayama Unso Team Akiyoshi 11 Kousuke Akiyoshi 1–3, 5, 8 46 Sho Hasegawa 7 Team ATJ 10 Satoru Iwata 1–3, 5–8 Team Sugai Racing Japan 29 Yoshiyuki Sugai 1–3, 5–7 Toho Racing 7 Ryuichi Kiyonari 3, 5–8 35 Kazuki Watanabe 1 40 Ikuhiro Enokido 2 SDG Honda Racing 4 Teppei Nagoe 1–3, 5–8 Team Agras 5 Yudai Kamei 8 Dunlop Racing Team with Yahagi 30 Tetsuta Nagashima 1–3, 5–8 Honda Soyukai Tochigi Racing 40 Takafumi Kato 2 Honda Blue Helmets MSC Kumamoto 45 Hiromasa Okada 6 KRP Sanyoukougyo RS-Itoh Kawasaki ZX-10R 31 Yuto Sano 1–3, 5–8 18 Akira Yanagawa 6, 8 Auto Race Ube Racing Team Suzuki GSX-R1000R 6 Takuya Tsuda 1–3, 5–8 Yoshimura SERT Motul 13 Cocoro Atsumi 1, 8 Factory Hiro HLO 44 Kota Higuchi 6 S-Sports 47 Hideyuki Ogata 7 Yamaha Factory Racing Team Yamaha YZF-R1 1 Katsuyuki Nakasuga 1–3, 5–8 2 Yuki Okamoto 1–3, 5–8 Nitro Racing 28 Akito Haga 1–3, 5–8 40 Shota Yokoyama 5 41 Ryota Haga 5 Team Baby Face 23 Kazuma Tsuda 1–3, 5–8 Team Kodama 14 Yuta Kodama 1–3, 5–8 RSN 27 Shinichi Nakatomi 1–3, 5–8 Taira Promote Racing 34 Yoshimasa Shibata 1–3, 7 Sources: Key Regular rider Wildcard rider

ST1000 participants Team Constructor Motorcycle Tyre Rider Rounds Team Tatara Aprilia Aprilia RSV4 1100 Factory 23 Ruka Wada 2–3, 6–8 Tone RT Syncedge4413 BMW BMW M1000RR 28 Ainosuke Yoshida 2–3, 6–8 33 Zechariah Dzegede 2–3, 6–8 Astemo Honda Dream SI Racing Honda CBR1000RR-R 30 Kosuke Sakumoto 2–3, 6–8 47 Taiga Hada 6–8 Moto Bum Honda 2 Kohta Arakawa 2–3, 6–8 21 Yasuhiro Matsukawa 2–3, 6–8 34 Motoharu Ito 2–3, 6–8 Toho Racing 3 Takuma Kunimine 2–3, 6–8 SDG Team Harc-Pro 10 Yuki Kunii 2–3, 6–8 Balz & Advance MC 36 Jun Kikuchi 2, 8 Club Next & Honda Dream 39 Hikaru Yoshihiro 2 Racing Team Seki 43 Kazumasa Seki 3 Honda Ryokuyokai Kumamoto Racing 20 Kazuhiro Kojima 6 22 Mitsuhiro Yoshida 6, 8 Team Izumi 49 Takashi Arase 6 Okinawa S-Pal Bike Club 51 Hidenari Ikeda 6 RT Japan M Auto 53 Tsukasa Murata 7 Team Bizenseiki 54 Masaki Yamanaka 7–8 Edwin Gesundheit Racing 57 Hinata Nakajima 8 Kawasaki Plaza Racing Team Kawasaki ZX-10R 9 Ryosuke Iwato 2–3, 6–8 32 Gun Mie 2–3, 6–8 Matsuba Racing RS Itoh 13 Tatsuya Nakamura 2–3, 6–8 Yamashina Kawasaki Ken Racing 24 Yuya Kabetani 6 Himeji Kawasaki Racing Team 56 Kazuo Nakanishi 7 Team Titan TKR Suzuki Suzuki GSX-R1000R 11 Takeru Murase 2–3, 6–8 A-Garage Project Fate 41 Yasunori Yamazoe 2 Akeno Speed Yamaha YZF-R1 31 Shota Ite 2–3, 6–8 Dogfight Racing JDS 7 Rei Toshima 2–3, 6–8 Fudosan Shigeki 35 Naoyuki Sato 2–3, 6–8 Hisa31 with R-in Spirits 29 Hisami Arai 2–3, 6–7 Nitro Racing 12 Shota Yokoyama 2–3, 6–8 113 ENAC racing 44 Masaaki Takada 3 Ride In 45 Takashi Sakamoto 3 RT Morinokumasan 46 Yuki Watabe 3 Squadra Tigre Taira Promote 48 Sho Nishimura 6–7 Team GYTR 8 Keisuke Maeda 7 Nichirin Racing 25 Masaki Adachi 7 Team Technica 27 Yoshiyuki Hayashi 7 West6 with T-Moto 52 Nobutaka Tanimoto 7 Team Pure Cosmos 55 Kuniyasu Takeo 7 Sources: Key Regular rider Wildcard rider

ST600 participants Team Constructor Motorcycle Tyre Rider Rounds Battle Factory Honda CBR600RR 16 Takuto Suzuki 2–3, 6–8 Japan Post Honda Dream TP 5 Tomoyoshi Koyama 2–3, 6–8 27 Syuu Yamato 2–3, 6–8 Moto Bum Honda 7 Kohki Suzuki 2–3, 6–8 21 Kai Aota 2–3, 6–8 26 Kenichi Sakurai 2–3, 6–8 Japan M Auto RT and 24 Service 32 Yoshihiro Toyohara 2–3, 6–8 SDG Team Harc-Pro 30 Kanta Hamada 2–3, 7–8 SE Competition 22 Naoki Yamada 2 28 Toshiki Senda 2–3, 6–8 44 Takatsugu Sakai 3, 7–8 TN45 with MotoUp Racing 13 Tetsuya Fujita 2–3, 6–8 Wakobo Racing with Bistoro K 34 Ryuki Matsushita 2–3, 8 Club Moto-Up with HD Adachi 38 Shuichiro Nakamura 2, 6 Honda Blue Helmets MSC Kumamoto 48 Shogo Nishiyama 6 K0 & Toho Racing Club 50 Anjyu Kasai 7–8 Sum Techno Service 54 Takanori Kawamoto 7–8 Speedtec Racing 55 Makoto Kobayashi 7 Moto Win Racing 57 Keisuke Tsukahara 8 Honda Suzuka Racing Team 58 Yousuke Ide 8 Fireworks & Yokenshokunin RP Kawasaki ZX-6R 36 Toshiro Miyawaki 2–3 Team Bizenseiki 51 Motonari Fujita 7 Akeno Speed Yamaha YZF-R6 6 Yuta Date 2–3, 6–8 29 Sota Horii 3, 6–8 Fujimoto Denki GBS Racing 17 Ren Okabe 2–3, 6–8 31 Keisuke Tanaka 2–3, 6–8 Ito Racing Borg Custom 9 Yousuke Nakayama 2–3, 6–8 12 Rei Matsuoka 2–3, 6–8 Nippon Pioneer Garage L8 8 Riku Sugawara 2–3, 6–8 Nitro Racing 10 Ryota Haga 2–3, 6 39 Yuta Okaya 2–3, 8 Squadra Tigre Taira Promote 1 Keito Abe 2–3, 6–7 Taira Promote Racing 25 Shinya Mikami 2–3, 8 Teamkenken 4 Kengo Nagao 2–3, 6–8 IXA Racing 33 Tatsuma Matsutani 2, 7 M Factory RT Niwa Engineering 35 Takahiro Niwa 2, 8 Team Kou with Flash 37 Kou Yamamoto 2 Team RSR Hokkaido 40 Takaya Kodama 3 Gitrax RSR Miura Pump Center 41 Hirofumi Kajita 3 Team t2y Toho 18 Tatsuya Yamaguchi 6–7 Shake Wako's Ukaretei 45 Yuji Arita 6 Nakayama Seimitu 46 Hikaru Akiyoshi 6 4ing RT Motul 47 Azusa Nomura 6 Green Sports RT 52 Shinji Oonaka 7 Speedtec KBS with J-Trip 53 Taichi Honda 7 TT45 56 Riki Hamano 7 Sources: Key Regular rider Wildcard rider

J-GP3 participants Team Constructor Motorcycle Tyre Rider Rounds Breasto B-Tribe Racing Honda NSF250R 7 Riku Matsushima 2–4, 6–8 Japan Post docomo business TP Japan Post Honda Dream TP 3 Rei Wakamatsu 2–4, 6–8 12 Shizuka Okazaki 2–4, 6–8 Marumae Dream Kitakyushu 13 Hayato Oota 2–4, 6–8 Marumae MTR 10 Masaki Tokudome 2–4, 6–8 Nozawa Racing Family 22 Hidenori Nozawa 2–4, 7–8 Team Plusone 4 Shota Kiuchi 2–4, 6–8 Team Deshi with RG Niwa 34 Norihiko Murata 2, 6, 8 Team Shun and Zero 11 Shun Takenaka 4, 8 Taira Promote Jr. 36 Yosuke Hosaka 6–8 Plan Bee Racing RSC 37 Arata Irimoto 6 Flex Racing Team & MH Ohara 38 Keiichi Kishida 7 Rairaku Kikaku with RG Niwa 39 Hiroshi Kaneko 7 Battle Factory 29 Tesshin Toyoda 2–4, 6–8 33 Rintaro Takemoto 2–4, 6 – Kakeru Endo 4, 8 P.MU 7C Galespeed 1 Hiroki Ono 2–4, 6–8 25 Sho Tokuda 2–4, 6–8 18 Zen Mitani 3–4 Team Hiro 30 Motonari Matsuda 2–4, 6–8 Team Kohsaka 24 Takuto Sumi 2–4, 6–8 Team Life Honda Dream 19 Yasuhiro Yamamoto 2–4, 6–8 Kijima Kiss Racing Club 31 Shingo Iidaka 2–4, 6–8 Inuno Nyusankin Primitive RT 40 Eito Nakamura 8 Team Kota – Kota Iwano 7 Team Power Craft Ak1teck – Soma Hasegawa 7–8 DH Alpaca Racing – Daijiro Hario 8 56Racing – Kotaro Togashi 8 Team HRS – Rintaro Todaka 8 TN45 with MotoUp Racing 28 Kenshin Nakatani 2–3, 6–8 – Haruki Matsuyama 2–4 35 Seiryu Ikegami 4 Astemo Honda Dream SI Racing 26 Burapa Wanmoon 2–4, 6 27 Thanachat Pratumtong 2–4, 6 WJ Factory 32 Ryota Ogiwara 2, 4 23 Fugo Tanaka 3 Team Naoko KTM KTM RC250R 5 Naoko Takasugi 2–4, 6–8Sources:KeyRegular riderS-class riderReplacement riderWildcard rider

Championship standings Scoring system Points are awarded to the top fifteen finishers. A rider has to finish the race to earn points. The same point system is used across the four classes. Three extra-points were awarded in the final round at the 56th MFJ Grand Prix at Suzuka Circuit. Position1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th15th Points (Rd. 1–7) 25 20 16 13 11 10 9 8 7 6 5 4 3 2 1 Points (Rd. 8) 28 23 19 16 14 13 12 11 10 9 8 7 6 5 4

Riders' standings JSB1000 Pos. Rider Bike SUZ MOT SUG MOT AUT OKA SUZ Pts R1 R2 R1 R2 R1 R2 R1 R2 1 Yuki Okamoto Yamaha 3 3 2F 2P F 1P 3 1F 1P F 1P F 2P 3P 230 2 Katsuyuki Nakasuga Yamaha 1F 1P F 1 1 3 2 2P 2 3 3F 16 211 3 Ryo Mizuno Ducati 2 2 3P 3 2F 1P F 3 20 2 1 1F 209 4 Kohta Nozane Honda 7 4 5 4 4 4 4 4 4 4 2 150 5 Takumi Takahashi Honda 5 8 7 7 5 6 5 3 9 6 4 121 6 Teppei Nagoe Honda 11 7 8 6 8 7 6 16 8 9 7 89 7 Takuya Tsuda Suzuki 6 5 4 9 9 5 8 6 5 Ret DNS 88 8 Satoru Iwata Honda 8 9 10 8 6 Ret 9 5 6 5 Ret 81 9 Kazuki Ito Honda 10 11 9 5 7 DSQ 7 8 7 7 Ret 76 10 Tetsuta Nagashima Honda 4P 6 6 10 10 Ret Ret 7 10 11 Ret 68 11 Taro Sekiguchi BMW Ret 15 12 12 12 8 10 11 11 12 8 55 12 Ryuichi Kiyonari Honda 11 11 10 17 12 12 13 11 38 13 Yuta Kodama Yamaha DSQ 18 14 15 13 9 11 9 13 14 Ret 33 14 Daijiro Hiura Honda 9 10 6 29 15 Yuto Sano Kawasaki 16 16 13 18 14 18 12 10 14 Ret 10 26 16 Cocoro Atsumi Suzuki 22 8 5 25 17 Yuki Sugiyama Honda 18 13 Ret 16 15 14 13 13 21 16 12 19 18 Yudai Kamei Honda 12 15 9 18 19 Kousuke Akiyoshi Honda Ret 12 Ret 17 18 11 17 13 15 20 Kazuma Tsuda Yamaha 23 17 11 13 21 12 16 17 17 Ret DNS 12 21 Akira Yanagawa Kawasaki 14 15 19 14 8 22 Ikuhiro Enokido Honda 10 Ret 6 23 Shinichi Nakatomi Yamaha 14 21 19 20 17 13 Ret 19 15 20 Ret 6 24 Tomoya Hoshino BMW Ret 14 15 19 16 Ret 15 14 Ret 18 Ret 6 25 Masahiro Shinjo Aprilia 17 19 Ret Ret 19 18 18 Ret Ret 15 4 26 Kazuma Watanabe Honda 13 3 27 Akito Haga Yamaha 15 20 16 14 Ret Ret 21 DNS 19 21 Ret 3 28 Ainosuke Yoshida BMW 19 15 1 29 Sho Hasegawa Honda 16 0 30 Shota Yokoyama Yamaha 16 0 31 Yoshiyuki Sugai Honda 20 24 18 21 20 17 19 Ret 18 0 32 Takafumi Kato Honda 23 17 0 33 Hideyuki Ogata Suzuki 20 0 34 Kota Higuchi Suzuki 20 21 0 35 Zechariah Dzegede BMW 21 0 36 Yoshimasa Shibata Yamaha Ret 22 Ret Ret DNS 0 Ryota Haga Yamaha Ret 0 Kazuki Watanabe Honda Ret 0 Hiromasa Okada Honda DNQ DNQ 0Source:P – Pole positionF – Fastest lap Notes:  – Rider did not finish the race, but was classified as they completed more than 75% of the race distance.

ST1000