The circuit was built by industrialist Oscar Glaser as part of a broader motorsport complex that included a hillclimb track, a dirt short track, a motocross track, and a speedway track. A full-length Grand Prix circuit was planned but never constructed. The name Amaroo derives from an Aboriginal word meaning "beautiful place." The first motorcycle meeting was held on 26 February, and the circuit's official opening was on 12 March 1967. After drawing poor crowds partly attributed to inadequate facilities, the circuit temporarily closed in mid-1968.
The circuit reopened on 31 May 1970 with substantially improved spectator facilities under new management by the Australian Racing Drivers Club (ARDC), the same organisation that promoted the Mount Panorama Circuit at Bathurst.
Starting on a short pit straight, the track kinked right and rose toward Bitupave Hill before turning left and dropping into the right-hand Dunlop Loop. The back straight kinked right toward the tight left-hander at Honda Corner — originally lacking runoff and bounded by concrete walls, later modified with a small chicane for motorcycle safety. Stop Corner (also called Lake Corner) followed, then a short run to the final turn, Wunderlich Corner (named for a sponsor, previously Ron Hodgson Corner), which returned to the pit straight. The fastest cars reached just over 220 km/h approaching Bitupave Hill. The outright lap record of 44.36 seconds was set by John Bowe in 1987 driving a Chevrolet-powered Veskanda C1 sports car.
Amaroo Park first hosted the ATCC in 1974, when Round 4 was won by Peter Brock driving a Holden LJ Torana GTR XU-1. The circuit went on to hold fifteen championship rounds through 1994, when the final ATCC race was won by Mark Skaife in a Gibson Motorsport Holden VP Commodore — giving Holden both the opening and closing wins at the venue.
From 1971 Amaroo hosted its own touring car series, initially as the Sun-7 Chesterfield Series, renamed the AMSCAR Series from 1982. Easy to televise and popular with spectators, the series became the backbone of Sydney's touring car scene and regularly attracted larger grids than the national ATCC rounds, filled by Sydney-based privateers who rarely travelled interstate due to limited budgets.
From 1985 the arrival of Group A homologation cars brought factory teams to the AMSCAR. Frank Gardner's JPS Team BMW with drivers Jim Richards and Tony Longhurst dominated from 1985 to 1987 — Richards was unbeaten at Amaroo in 1985, winning all twelve AMSCAR races alongside the ATCC round and an endurance event. Gibson Motorsport later contested the series with Nissan and then Holden machinery. The series was discontinued after 1993, briefly revived in 1997, then folded permanently when privateer numbers fell below viable grid sizes.
Between 1980 and 1987, the circuit ran a prominent endurance race over 155 laps of the circuit (totalling approximately 300.7 km), usually the second major touring car endurance race of the season after the Adelaide International Raceway event. The race became a formal round of the Australian Endurance Championship from 1983. The final event in 1987 was shortened to 100 laps.
The ARDC sold Amaroo Park to recover losses incurred while promoting the Bathurst 1000 under Super Touring regulations from 1997 to 1999. The final meeting was held on 23 August 1998, billed as the "Goodbye Amaroo State Open Meeting." The last race, a multi-class "Butchers Picnic" in tribute to the circuit's earliest events, was won by Ray Lintott in a four-wheel-drive turbocharged Porsche 911 Turbo. The final competitor crossed the finish line at 4:40 pm, ending over 31 years of racing at one of Sydney's best-known circuits.
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