İzmit Körfez Circuit (Turkish: İzmit Körfez Yarış Pisti) is a motor sports race track about 17 km west of İzmit, in Körfez district of Kocaeli Province, Turkey. Sponsored by the Turkish Automobile Sports Federation (TOSFED) and built by the Istanbul Motorsports Club (İMK), it was inaugurated in 1993 as the first asphalted race track in Turkey.