Suzuka was designed as a Honda test track by Dutch engineer John Hugenholtz and opened in 1962. Its defining characteristic is the figure-of-eight layout, the only one at FIA Grade 1 level, where the 1.2 km back straight passes over the front section via an overpass bridge. The circuit features a sequence of high-commitment corners — the Esses, Dunlop Curve, Degner, 130R, and the Casio Triangle chicane — connected by the long back straight that creates the principal overtaking opportunity in most categories.
The circuit has been modified at least eight times since opening, with significant changes in 1983 (addition of the Casio chicane), 1987 (upgrade to F1 and motorcycle Grand Prix standards, reconfiguration of Degner into two corners), and 2002–2003 (safety modifications at 130R following high-speed accidents). In 2025, the circuit was resurfaced from Turn 1 to the entry of Turn 8 ahead of the Formula One Japanese Grand Prix.
Suzuka holds a capacity of 155,000. It is operated by Honda Mobilityland, a Honda subsidiary, which also operates Mobility Resort Motegi.
The Super Formula Championship's Suzuka rounds carry special weight within the series calendar. The May round, typically run as part of a concentrated championship phase, and the November JAF Suzuka Grand Prix — the traditional season finale — define the rhythm of the title season. The 5.807 km lap generates average lap times that make Suzuka the fastest permanent circuit on the Super Formula calendar, and the SF23 chassis produces qualifying lap times that place it closer to Formula One performance at this venue than almost any other in Japanese domestic racing.
The Degner curve, 130R, and the Esses sequence reward drivers who can commit to corners at speeds that leave no margin for correction, while the Casio Triangle chicane and the hairpin provide the principal overtaking zones where Super Formula drivers can make decisive moves under braking.
Suzuka has hosted the Formula One Japanese Grand Prix since 1987, interrupted only in 2007 and 2008 when Toyota-owned Fuji Speedway temporarily held the race. Several world championships have been decided at the circuit. In 1988, Ayrton Senna took his first title there. The 1989 and 1990 championships — both involving Senna and Alain Prost — were decided at Suzuka in controversies that defined an era of Formula One. The 1991 title also went to Senna there. Michael Schumacher, Mika Häkkinen, and later Lewis Hamilton and Max Verstappen all settled or contested titles at the venue.
The 2014 Japanese Grand Prix brought tragedy when Jules Bianchi collided with a recovery vehicle during the race, sustaining injuries that proved fatal nine months later. The accident led to tightened safety procedures for incidents involving trackside recovery operations.
Suzuka hosts the Suzuka 8 Hours, a motorcycle endurance race run since 1978, and the Suzuka 1000 km, a long-distance event for the Super GT Series. The circuit also held the World Sportscar Championship from 1989 to 1992, the Japanese motorcycle Grand Prix from 1987 to 2003, and the FIA WTCC Race of Japan from 2011 to 2014. NASCAR staged exhibition events on the East Course configuration in 1996 and 1997.
The Degner curve is named in honour of Ernst Degner, who crashed there during the inaugural All Japan Championship Road Race meeting on 3 November 1962.
Suzuka Circuit is one of the most represented real-world venues in sim racing, appearing in Gran Turismo 4, 5, 6, Sport, and 7, Forza Motorsport, iRacing, RaceRoom Racing Experience, the Final Lap arcade series, Suzuka 8 Hours for Super NES, Super Monaco GP, Shift 2 Unleashed, and numerous other titles. Project CARS and Project CARS 2 feature a fictionalised version called Sakitto Circuit which draws from Suzuka's layout while altering visual details.