International Circuit. On March 3, 2012, Unimat sold the circuit to Aska Corporation, an auto parts manufacturing company. Events Current April: Super GT June: Formula Regional Japanese Championship Okayama Challenge Cup Race, TCR Japan Touring Car Series August: GT World Challenge Asia Fanatec Japan Cup, GT4 Asia Series September: Super Formula Lights, MFJ Superbikes October: Super Taikyu Former Asian Le Mans Series 1000 km of Okayama (2009) F4 Japanese Championship (2015–2019) 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) Super Formula Championship (2007–2008, 2015–2020) World Touring Car Championship 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. The official race lap records at the Okayama International Circuit are listed as: Notes References External links Okayama International Circuit official website – Asian Festival of Speed results Formula One circuits Pacific Grand Prix Motorsport venues in Japan Sports venues in Okayama Prefecture World Touring Car Championship circuits Sports venues completed in 1990 1990 establishments in Japan Mimasaka, Okayama