View source for Okayama International Circuit

{{Short description|Motorsport track in Japan}}
{{Motorsport venue
| Name          = Okayama International Circuit
| Former_names  = TI Circuit Aida (November 1990–April 2005)
| Location      = [[Mimasaka, Okayama|Mimasaka]], [[Okayama Prefecture]], [[Japan]]
| Time          = [[UTC+09:00]]
| Coordinates   = {{coord|34|54|54|N|134|13|16|E|type:landmark_scale:20000_region:JP|display=inline,title}}
| Image         = [[Image:Circuit TI (Aida).png|250px]]
| Image_caption = Grand Prix Circuit (1990–present)
| FIA_grade     = 2
| Broke_ground  = 1989
| Opened        = {{Start date and age|df=yes|1990|11|18}}
| Owner         = Aska Corporation (March 2012–present)<br />Unimat Corporation (April 2004–March 2012)<br />Tanaka International (November 1990–April 2004)
| Events        = '''Current:'''<br />'''[[Super GT]]'''<br />(1999–2019, 2021–present)<br />'''[[GT World Challenge Asia]]''' (2022–present)<br />'''[[Japan Cup Series]]''' (2022–present)<br />'''[[Formula Regional Japanese Championship|FRJC]]''' (2020–present)<br />'''[[Super Formula Lights]]''' (1994–1995, 1998–2020, 2022–present)<br />'''Former:'''<br />[[Formula One]]<br />''[[Pacific Grand Prix]]'' (1994–1995)<br />[[World Touring Car Championship|WTCC]]<br />''[[FIA WTCR Race of Japan|Race of Japan]]'' (2008–2010)<br />[[Super Formula]]<br>(2007–2008, 2015–2020)<br />[[JK Racing Asia Series|Formula BMW Pacific]]<br />(2009–2010)<br />[[Formula V6 Asia]] (2008)<br />[[Japan Le Mans Challenge]] (2006–2007)
| Layout1       = Grand Prix Circuit (1990–present)
| Length_km     = 3.703
| Length_mi     = 2.300
| Turns         = 13
| Record_time   = 1:14.023
| Record_driver = {{flagicon|GER}} [[Michael Schumacher]]
| Record_car    = [[Benetton B194]]
| Record_year   = [[1994 Pacific Grand Prix|1994]]
| Record_class  = [[Formula One|F1]]
| Layout2       = Motorcycle Circuit (2020–present) 
| Length_km2    = 3.747
| Length_mi2    = 2.328
| Turns2        = 17
| Record_time2  = 1:29.889
| Record_driver2= {{flagicon|JPN}} [[Yuki Okamoto (motorcyclist)|Yuki Okamoto]]
| Record_car2   = [[Yamaha YZF-R1]]
| Record_year2  = [[All Japan Road Race Championship|2024]]
| Record_class2 = [[Superbike racing|SBK]]
| Layout3       = Piper Circuit (1990–present) 
| Length_km3    = 1.956
| Length_mi3    = 1.221
| Turns3        = 8
| Record_time3  = 
| Record_driver3= 
| Record_car3   = 
| Record_year3  = 
| Record_class3 = 
}}

{{Infobox company
|name = Okayama International Circuit Co., Ltd.<br />株式会社岡山国際サーキット
|type = Kabushiki gaisha
|foundation = [[Aida, Okayama|Aida]] (part of [[Mimasaka, Okayama|Mimasaka]]), [[Okayama Prefecture]], [[Japan]] ({{start date|1988|8|13}})
|location = Mimasaka, Okayama Prefecture, Japan
|parent = Aska Corporation<ref name="parent_company">{{cite press release|script-title=ja:株式会社岡山国際サーキットの株式取得（子会社化）についてのお知らせ |publisher=Aska Corporation |date=March 12, 2012 |url=http://www.aska.co.jp/investor/finance/aska120312.pdf |language=ja |trans-title=We resolved on the acquiation of whole stock in Okayama International Circuit Co., Ltd. |access-date=April 24, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20130921231159/http://www.aska.co.jp/investor/finance/aska120312.pdf |archive-date=September 21, 2013 }}</ref>
|}}

'''Okayama International Circuit''' (岡山国際サーキット), formerly known as '''TI Circuit Aida''' (TIサーキット英田) before 2005, is a {{convert|3.703|km|mi|abbr=on}} private [[motorsport]] race track in [[Mimasaka, Okayama|Mimasaka]], [[Okayama Prefecture]], [[Japan]]. '''TI''' was the abbreviation of "Tanaka International" after the name of the golf club owner, Hajime Tanaka, though the name of the circuit was officially "TI Circuit Aida".

As well as hosting racing events, the circuit has rental facilities including bikes and go karts available.

==History==
The course was opened in 1990 as a private motor racing track for the wealthy.<ref>{{cite web|url=http://www.okayama-international-circuit.jp/guide/course.html |title=Course guide |publisher=Okayama International Circuit website |language=ja |access-date=2012-12-28}}</ref> Soon, it hosted its first race, staged by veteran [[Great Britain|British]] drivers.

In {{F1|1994}} and {{F1|1995}}, the TI Circuit hosted the [[Formula One]] [[Pacific Grand Prix]]; both events were won by [[Michael Schumacher]] in his early title-winning years. This race made Japan one of only nine countries to ever host more than one Formula One event in the same year ([[Autopolis]] was planned to host a second Japanese race in {{f1|1993}}, but it never came to fruition). It was discontinued primarily due to its location in a remote area of the country.<ref>{{cite web |last1=Cooper |first1=Adam |title=Why Japan's second F1 race didn't take off |url=https://www.motorsport.com/f1/news/t1-aida-pacific-gp-japan/4781785/ |website=Motorsport.com |access-date=October 28, 2020 |date=April 17, 2020}}</ref> The event was also planned to host a race of the [[1996 International Touring Car Championship]] season in August to replace the F1 race, but the race was instead moved to [[Suzuka Circuit]], held in November.

In 1999, defending [[All Japan Grand Touring Car Championship|JGTC]] GT300 champion [[Shingo Tachi]] was killed when he tested a GT500 Toyota Supra after he suffered from a technical failure that prevented him from slowing down for the first turn.<ref>{{cite web |last1=O'Connell |first1=R.J. |title=Remembering Shingo Tachi, 20 Years Later |url=http://www.dailysportscar.com/2019/03/12/remembering-shingo-tachi-20-years-later.html |website=Dailysportscar |access-date=19 October 2020}}</ref> Although there was no driver fatality in the JGTC or [[Super GT]] race events beforehand, the incident occurred almost a year after [[Tetsuya Ota]]'s near-fatal, fiery accident at [[Fuji Speedway]].

In March 2003, the Tanaka International Company, parent company of the official circuit owner TI Circuit Company, applied for civil rehabilitation. After the application, Unimat Holding Co., Ltd. announced that it would financially support the TI Circuit Company in keeping the facility open. The company was renamed Okayama International Circuit Co., Ltd. on May 1, 2004, and the circuit was renamed Okayama International Circuit on January 1, 2005. 

On October 26, 2008, the circuit hosted a round of the [[Formula V6 Asia]] and [[Fédération Internationale de l'Automobile|FIA]] [[2008 World Touring Car Championship season|World Touring Car Championship]]. The [[World Touring Car Championship|WTCC]] race was the first FIA world championship race since 1995. However, it was announced on June 21, 2010 that [[Suzuka Circuit]] would host the Japan round of the 2011 WTCC season instead of the Okayama International Circuit.<ref>{{cite web|url=http://www.fiawtcc.com/Read_News.asp?idnews=585 |title=FIA WTCC TO RACE AT SUZUKA IN 2011 |publisher=fiawtcc.com |date=2010-06-21 |access-date=2010-07-20}}</ref>

On March 3, 2012, Unimat sold the circuit to Aska Corporation, an auto parts manufacturing company.<ref name="parent_company"/>

==Events==

; Current

* April: [[Super GT]]
* May: [[Porsche Carrera Cup|Porsche Carrera Cup Japan]], [[Formula Regional Japanese Championship]]
* June: [[Super Formula Lights]]
* August: [[GT World Challenge Asia]], [[Japan Cup Series]], [[Ferrari Challenge#Ferrari Challenge Japan|Ferrari Challenge Japan]]
* October: [[Super Taikyu]], [[All Japan Road Race Championship|MFJ Superbikes]]

; Former

* [[Asian Le Mans Series]]
** ''[[2009 1000 km of Okayama|1000 km of Okayama]]'' (2009)
* [[F4 Japanese Championship]] (2015–2019)
* [[JK Racing Asia Series|Formula BMW Pacific]] (2009–2010)
* [[Formula One]]
** ''[[Pacific Grand Prix]]'' (1994–1995)
* [[Formula Toyota]] (2005–2006)
* [[Formula V6 Asia]] (2008)
* [[Japan Le Mans Challenge]] (2006–2007)
* [[Japanese Touring Car Championship]] (1992–1995, 1997–1998)
* [[Super Formula Championship]] (2007–2008, 2015–2020)
* [[TCR Japan Touring Car Series]] (2019–2020, 2022–2023)
* [[World Touring Car Championship]]
** ''[[FIA WTCR Race of Japan|FIA WTCC Race of Japan]]'' (2008–2010)

== Lap records ==

The outright unofficial all-time track record is 1:10.218, set by triple-world champion [[Ayrton Senna]] in a [[Williams FW16]], during qualifying for the [[1994 Pacific Grand Prix]]. As of May 2025, the fastest official race lap records at the Okayama International Circuit are listed as:

{| class="wikitable"
!Category!!Time!!Driver!!Vehicle!!Event
|-
! colspan="5" | Grand Prix Circuit: 3.703&nbsp;km (1990–present)<ref name='okayama_rcircuits'>{{Cite web |title=Okayama International Circuit - Racing Circuits |url=https://www.racingcircuits.info/asia/japan/okayama.html |website=RacingCircuits.info |access-date=8 October 2023}}</ref>
|-
| [[Formula One]] || '''1:14.023''' || [[Michael Schumacher]] || [[Benetton B194]] || [[1994 Pacific Grand Prix]]
|-
| [[Super Formula]] || '''1:15.237'''<ref>{{Cite web |title=2020 Super Formula Okayama Race Statistics |url=https://motorsportstats.com/results/super-formula/2020/okayama/stats |date=27 September 2020 |access-date=26 March 2023}}</ref> || [[Nick Cassidy]] || [[Dallara SF19]] || [[2020 Super Formula Championship|2020 Okayama Super Formula round]]
|-
| [[Formula Nippon]] || '''1:19.345'''<ref>{{Cite web |title=2008 TI-Aida Formula Nippon |url=https://www.motorsportmagazine.com/database/races/2008-ti-aida-formula-nippon/ |website=[[Motor Sport (magazine)|Motor Sport Magazine]] |date=8 June 2008 |access-date=20 May 2022}}</ref> || [[Satoshi Motoyama]] || [[Lola B06/51|Lola FN06]] || [[2008 Formula Nippon Championship|2008 Okayama Formula Nippon round]]
|-
| [[Super GT#GT500|Super GT (GT500)]] || '''1:19.710'''<ref>{{cite web |title=2018 Super GT Round 1 Okayama GT500 Results |url=https://supergt.net/results/index/2018/Round1 |date=8 April 2018 |access-date=21 March 2021}}</ref> || [[Takashi Kogure]] || [[Honda NSX (second generation)#Super GT|Honda NSX-GT]] || [[2018 Super GT Series|2018 Okayama GT 300 km Race]]
|-
| [[Le Mans Prototype#LMP1|LMP1]] || '''1:20.561'''<ref name='2009_1000km_okayama'>{{cite web |title=Asian Le Mans Series Okayama, Japan 30 October–1 November 2009 |url=http://www.asian-lemans-series.com/ressources/chronos/90011alm.pdf |archive-url=https://web.archive.org/web/20110707173538/http://www.asian-lemans-series.com/ressources/chronos/90011alm.pdf |publisher=[[Asian Le Mans Series]] |date=1 November 2009 |archive-date=7 July 2011 |access-date=9 November 2022 |url-status=dead}}</ref> || [[Jonny Cocker]]{{efn|name=2009 1000km Okayama LMP1 FL Record|2009 1000 km of Okayama Race 2 - Stint Summary for Car 87 - Car Stint Report}} || [[Lola-Aston Martin B09/60]] || [[2009 1000 km of Okayama]]
|-
| [[Le Mans Prototype#History|LMP900]] || '''1:21.298'''<ref>{{Cite web |title=Okayama 1000 Kilometres 2006 |url=https://www.racingsportscars.com/race/Okayama-2006-10-22.html |date=22 October 2006 |access-date=9 November 2022}}</ref> || [[Hiroki Katoh]] || [[Reynard 02S|Zytek 04S]] || [[Japan Le Mans Challenge|2006 Okayama JLMC round]]
|-
| [[Formula Three]] || '''1:21.380'''<ref>{{Cite web |title=2017 Okayama Japanese F3 - Round 2 |url=https://www.motorsportmagazine.com/database/races/2017-okayama-japanese-f3-4/ |website=[[Motor Sport (magazine)|Motor Sport Magazine]] |date=2 April 2017 |access-date=20 May 2022}}</ref> || [[Álex Palou]] || [[Dallara F3 cars#F312|Dallara F314]] || [[2017 Japanese Formula 3 Championship|2017 1st Okayama Japanese F3 round]]
|-
| [[Super Formula Lights]] || '''1:22.281'''<ref>{{Cite web |title=2022 Okayama Super Formula Lights Race 2 Statistics |url=https://motorsportstats.com/results/super-formula-lights/2022/okayama/stats/race-2 |date=25 September 2022 |access-date=25 September 2022}}</ref> || [[Iori Kimura]] || [[Dallara 320]] || [[2022 Super Formula Lights|2022 Okayama Super Formula Lights round]]
|-
| [[Le Mans Prototype#LMP2|LMP2]] || '''1:24.948'''<ref name='2009_1000km_okayama' /> || [[Matthieu Lahaye]]{{efn|name=2009 1000km Okayama LMP2 FL Record|2009 1000 km of Okayama Race 2 - Stint Summary for Car 24 - Car Stint Report}} || [[Pescarolo 01]] || [[2009 1000 km of Okayama]]
|-
| [[Super GT#GT300|Super GT (GT300)]] || '''1:26.304'''<ref>{{cite web |title=2018 Super GT Round 3 Suzuka GT300 Results |url=https://supergt.net/results/index/2017/Round1/4/gt300 |date=9 April 2017 |access-date=21 March 2021}}</ref> || [[Naoya Gamou]] || [[Mercedes-AMG GT#AMG GT3 (2015–2019)|Mercedes-AMG GT3]] || [[2017 Super GT Series|2017 Okayama GT 300 km Race]]
|-
| [[Formula Regional]] || '''1:26.315'''<ref>{{cite web |title=2025 Formula Regional Japanese Championship Round 1 - Race 3 - Results |url=https://www.okayama-international-circuit.jp/miru/result/pdf/1_93_3858_1748150379final.pdf |date=25 May 2025 |access-date=25 May 2025}}</ref> || [[Tokiya Suzuki]] || [[Formula Regional Japanese Championship#Car|Dome F111/3]] || [[2025 Formula Regional Japanese Championship|2025 Okayama FRJC round]]
|-
| [[Superbike racing|Superbike]] || '''1:28.153'''<ref>{{cite web |title=2017 MFJ All Japan Road Race Championship - Superbike Race in Okayama - JSB1000 - Race Final Result |url=http://www.okayama-international-circuit.jp/miru/result/pdf/2_56_1865_1506849436final.pdf |date=1 October 2017 |access-date=8 October 2023}}</ref> || [[Katsuyuki Nakasuga]] || [[Yamaha YZF-R1]] || [[All Japan Road Race Championship|2017 Okayama All Japan Road Race Championship Superbike round]]
|-
| [[Group GT3|GT3]] || '''1:29.089'''<ref name='2024_okayama_japancup_r1'>{{cite web |title=2024 Japan Cup - Race 1 - Round 7 - Classification - Final |url=https://www.tsl-timing.com/file/?f=GTASIA/2024/243408rc1jpc.pdf |date=24 August 2024 |access-date=24 August 2024}}</ref> || [[Shinichi Takagi]] || [[Ferrari 296#296 GT3|Ferrari 296 GT3]] || [[2024 Japan Cup Series|2024 Okayama Japan Cup Series round]]
|-
| [[Porsche Carrera Cup]] || '''1:29.161'''<ref>{{cite web |title=2022 Okayama GT 300 km Race - Porsche Carrera Cup Japan 2022 - Final Result Round 2 |url=https://press.jp.porsche.com/download/prod/presse_pag/PressBasicData.nsf/Download?OpenAgent&attachmentid=2222326&previewpdf=1 |date=17 April 2022 |access-date=6 August 2023}}</ref> || [[Tsubasa Kondo]] || [[Porsche 911 GT3#992 GT3 Cup (2021–)|Porsche 911 (992) GT3 Cup]] || [[Porsche Carrera Cup|2022 Okayama Porsche Carrera Cup Japan round]]
|-
| [[Formula Renault#Formula Renault 3.5L|Formula Renault 3.5]] || '''1:29.311'''<ref>{{Cite web |title=2008 Okayama Formula V6 Asia - Race 1 - Official Classification |url=http://www.okayama-international-circuit.jp/miru/result/pdf/1_14_87_1225026306final.pdf |date=25 October 2008 |access-date=30 August 2023}}</ref> || [[Earl Bamber]] || [[Tatuus#Racecars|Tatuus FRV6]] || [[2008 Formula V6 Asia Championship|2008 Okayama Formula V6 Asia round]]
|-
| [[Group GT1#GTS "GT1" (2000–2009)|GT1 (GTS)]] || '''1:30.359'''<ref name='2009_1000km_okayama' /> || [[Carlo van Dam]]{{efn|name=2009 1000km Okayama GT1 FL Record|2009 1000 km of Okayama Race 2 - Stint Summary for Car 50 - Car Stint Report}} || [[Saleen S7#S7R|Saleen S7-R]] || [[2009 1000 km of Okayama]]
|-
| [[LM GTE#History|GT2]] || '''1:32.136'''<ref name='2009_1000km_okayama' /> || [[Dirk Müller (racing driver)|Dirk Müller]]{{efn|name=2009 1000km Okayama GT2 FL Record|2009 1000 km of Okayama Race 2 - Stint Summary for Car 92 - Car Stint Report}} || [[BMW M3 GT2]] || [[2009 1000 km of Okayama]]
|-
| [[Formula 4]] || '''1:32.202'''<ref>{{cite web |title=2017 Okayama GT300 Race FIA F4 Race 1 |url=http://www.okayama-international-circuit.jp/miru/result/pdf/1_55_1771_1491654814final.pdf |date=8 April 2017 |access-date=30 August 2023}}</ref> || [[Ritomo Miyata]] || [[Dome F110]] || [[2017 F4 Japanese Championship|2017 Okayama Japanese F4 round]]
|-
| [[Sport bike#Classes|Supersport]] || '''1:32.794'''<ref>{{cite web |title=2017 MFJ All Japan Road Race Championship - Superbike Race in Okayama - ST600 - Race Final Result |url=http://www.okayama-international-circuit.jp/miru/result/pdf/2_56_1864_1506849471final.pdf |date=1 October 2017 |access-date=8 October 2023}}</ref> || [[Keisuke Maeda]] || [[Yamaha YZF-R6]] || [[All Japan Road Race Championship|2017 Okayama All Japan Road Race Championship Supersport round]]
|-
| [[Ferrari Challenge]] || '''1:33.242'''<ref>{{cite web |title=2024 Ferrari Challenge Trofeo Pirelli Japan - Round 5 - Race 2 - Classification - Final |url=https://www.tsl-timing.com/file/?f=GTASIA/2024/243408rc2fap.pdf |date=25 August 2024 |access-date=25 August 2024}}</ref> || [[Yuga Furutani]] || [[Ferrari 488#Motorsport|Ferrari 488 Challenge Evo]] || [[Ferrari Challenge#Ferrari Challenge Japan|2024 Okayama Ferrari Challenge Japan round]]
|-
| [[Formula Toyota]] || '''1:34.021'''<ref>{{Cite web |title=Super F3 Race in Okayama 2005 - ESSO Formula Toyota Series Round 4 |url=http://www.toyota.co.jp/ms/ft/racereport/20050618r.html |date=18 June 2005 |access-date=29 November 2022}}</ref> || [[Tsubasa Abe]] || [[TOM'S|Tom's FT30]] || [[Formula Toyota|2005 1st Okayama Formula Toyota round]]
|-
| [[LM GTE#History|GT]] || '''1:34.335'''<ref>{{cite web |title=GT Aida 2003 |url=https://www.racingsportscars.com/race/Okayama-2003-03-30-12354.html |date=30 March 2003 |access-date=24 January 2023}}</ref> || [[Atsushi Yogou]] || [[Porsche 911 GT3#996 GT3 R (1999–2001)|Porsche 911 (996) GT3-R]] || [[2003 All Japan Grand Touring Car Championship|2003 Aida JGTC round]]
|-
| [[Formula BMW]] || '''1:34.388'''<ref>{{cite web |title=2009 Okayama - Formula BMW Pacific - Race 1 Result |url=https://www.okayama-international-circuit.jp/miru/result/pdf/1_18_117_1257123087final.pdf |date=31 October 2009 |access-date=9 June 2024}}</ref> || [[Facu Regalia]] || [[Mygale FB02]] || [[2009 Formula BMW Pacific season|2009 Okayama Formula BMW Pacific round]]
|-
| [[Group A#Touring car racing|Group A]] || '''1:36.281'''<ref>{{Cite web |title=1993 TI Circuit Aida Group A 300 Km Race |url=http://touringcarracing.net/Races/1993%20Okayama.html |date=8 August 1993 |access-date=20 May 2022}}</ref> || [[Kazuyoshi Hoshino]] || [[Nissan Skyline GT-R#Motorsports|Nissan Skyline GT-R BNR32]] || [[1993 Japanese Touring Car Championship|1993 Okayama JTCC round]]
|-
| [[TCR Touring Car]] || '''1:36.706'''<ref>{{cite web |title=2023 Okayama TCR Japan Race 1 Results |url=https://tcr-japan.jp/sites/default/files/tcrj/result/2023TCRJ_Rd2SAT_final.pdf |date=10 June 2023 |access-date=10 June 2023}}</ref> || [[Anna Inotsume]] || [[Honda Civic Type R TCR]] || [[2023 TCR Japan Touring Car Series|2023 Okayama TCR Japan round]]
|-
| [[SRO GT4|GT4]] || '''1:36.732'''<ref name='2024_okayama_japancup_r1' /> || [[Daiki Fujiwara]] || [[Porsche 718 Boxster and Cayman (982)#718 Cayman GT4 RS Clubsport|Porsche 718 Cayman GT4 RS Clubsport]] || [[2024 Japan Cup Series|2024 Okayama Japan Cup Series round]]
|-
| [[Super Touring]] || '''1:36.807'''<ref>{{cite web |title=1997 TI Super Touring Car Race JTCC Round 4 Results |url=https://motorsports.jaf.or.jp/results/search/1997/race/1997-9999-15 |language=Japanese |date=11 May 1997 |access-date=7 April 2025}}</ref> || [[Osamu Nakako]] || [[Honda Accord#Motorsport|Honda Accord]] || [[1997 Japanese Touring Car Championship|1997 Okayama JTCC round]]
|-
| [[Super 2000#Touring cars|Super 2000]] || '''1:48.767'''<ref>{{Cite web |title=WTCC 2008 » Okayama Round 22 Results |url=https://www.touringcars.net/database/race.php?id=2119 |date=26 October 2008 |access-date=26 March 2023}}</ref> || [[James Thompson (racing driver)|James Thompson]] || [[Honda Accord#Motorsport|Honda Accord Euro R]] || [[2008 World Touring Car Championship|2008 FIA WTCC Race of Japan]]
|-
! colspan="5" | Motorcycle Circuit: 3.747&nbsp;km (2020–present)<ref name='okayama_rcircuits' />
|-
| [[Superbike racing|Superbike]] || '''1:29.889'''<ref>{{cite web |title=2024 All Japan Road Race Championship - Superbike Race in Okayama - JSB1000 Supported by ETS Racing Fuels - Race 2 Result |url=https://www.okayama-international-circuit.jp/miru/result/pdf/2_87_3667_1727592719final.pdf |date=29 September 2024 |access-date=20 October 2024}}</ref> || [[Yuki Okamoto (motorcyclist)|Yuki Okamoto]] || [[Yamaha YZF-R1]] || [[All Japan Road Race Championship|2024 Okayama All Japan Road Race Championship Superbike round]]
|-
| [[Sport bike#Classes|Supersport]] || '''1:35.235'''<ref>{{cite web |title=2023 All Japan Road Race Championship - Superbike Race in Okayama - ST600 Supported by Bridgestone - Race Result |url=http://www.okayama-international-circuit.jp/miru/result/pdf/2_83_3329_1695541424final.pdf |date=24 September 2023 |access-date=8 October 2023}}</ref> || [[Kengo Nagao]] || [[Yamaha YZF-R6]] || [[All Japan Road Race Championship|2023 Okayama All Japan Road Race Championship Supersport round]]
|-
| [[Grand Prix motorcycle racing#Moto3 class|Moto3]] || '''1:39.740'''<ref>{{cite web |title=2023 All Japan Road Race Championship - Superbike Race in Okayama - J-GP3 - Race Result |url=https://www.okayama-international-circuit.jp/miru/result/pdf/2_87_3657_1727590129final.pdf |date=29 September 2024 |access-date=20 October 2024}}</ref> || [[Hiroki Ono]] || [[Honda NSF250R]] || [[All Japan Road Race Championship|2024 Okayama All Japan Road Race Championship J-GP3 round]]
|-
|}

==Notes==
{{notelist}}

==References==
{{reflist|2}}

==External links==
{{commons category}}
* [http://www.okayama-international-circuit.jp/ Okayama International Circuit official website] – {{in lang|ja}}
* [https://web.archive.org/web/20081101170149/http://www.afos.com/allresult_listing2.php Asian Festival of Speed results]

{{GT World Challenge Asia circuits}}
{{Super GT courses}}
{{Formula One circuits}}
{{WTCC circuits}}
{{Asian Le Mans circuits}}
{{Super Formula circuits}}
{{D1GP circuits}}
{{JTCC circuits}}

[[Category:Formula One circuits]]
[[Category:Pacific Grand Prix]]
[[Category:Motorsport venues in Japan]]
[[Category:Sports venues in Okayama Prefecture]]
[[Category:World Touring Car Championship circuits]]
[[Category:Sports venues completed in 1990]]
[[Category:1990 establishments in Japan]]
[[Category:Mimasaka, Okayama]]