Okayama International Circuit

Okayama International Circuit stands as one of Japan's premier racing venues, nestled in the hills of Mimasaka in Okayama Prefecture. This 3.703-kilometer (2.301-mile) track opened on November 18, 1990, originally named TI Circuit Aida, with "TI" representing "Tanaka International" after its first owner. The circuit combines technical corners with elevation changes, creating a challenging layout that has tested drivers across multiple racing categories for over three decades.

Technical Specifications

The main configuration features 13 turns across its 3.703-kilometer length, though some sources list 11 turns. The track width ranges from 12 to 15 meters throughout the circuit. Okayama holds an FIA Grade 2 certification, allowing it to host most international racing series except Formula 1. The circuit offers two layouts: the full course and a shorter 1.2-mile (7-turn) configuration. The track includes significant elevation changes, with a maximum difference of 29 meters between its highest and lowest points.

Track Layout and Design

Famous circuit designer Hermann Tilke created this track, incorporating various technical challenges. The layout begins with the sweeping "Moss S" curves, named after British racing legend Stirling Moss. Other turns honor racing figures like David Hobbs, Brian Redman, and Frank Williams. The circuit features a mix of flowing corners, technical sections, a tight hairpin, and a challenging final sweep that leads onto the main straight. The combination of elevation changes and varied corner types requires precise driving and effective car setup.

Formula 1 History

Okayama International Circuit hosted two Formula 1 races under the Pacific Grand Prix name in 1994 and 1995. Michael Schumacher won both events, driving for Benetton. Despite producing exciting racing, F1 discontinued the event after 1995, primarily due to the circuit's remote location, which made logistics difficult for teams and spectators. This brief F1 history remains a significant part of the track's legacy.

Other Racing Events

The circuit has hosted numerous national and international events. The World Touring Car Championship (WTCC) held rounds at Okayama from 2008 to 2010. Regular competitions include Japan's premier series like Super GT Championship, Super Formula, and Super Taikyu. The track also welcomes motorcycle events, including the All Japan Road Racing Championship. Recent years have seen GT World Challenge Asia and other international series add Okayama to their calendars.

Facilities and Modern Features

In 2003, the circuit underwent significant upgrades with a new pit complex and extended main straight. The facility includes grandstands that can accommodate up to 30,000 spectators. Originally designed as a "country club" track for wealthy car enthusiasts, the circuit now serves as a professional racing venue. The track has changed ownership twice since opening, with Tanaka International (1990-2004), Unimat Corporation (2004-2012), and now Aska Corporation (2012-present). Minor safety modifications occurred in January 2020, including expanded run-off areas near the Moss-S section.

Access and Additional Features

Located approximately one hour by car from Okayama city, the facility includes a smaller "Mini course" used for driving safety training and gymkhana events. This compact layout provides options for driver development and testing. The combination of challenging layout, scenic location, and modern facilities continues to make Okayama International Circuit a vital part of Japan's motorsport landscape.