The Longford Circuit was a temporary motor racing course laid out on public roads at Longford, 23-kilometre (14 mi) south-west of Launceston in Tasmania, Australia. It was located on the northern edges of the town and its 7.242 km (4.500 mi) lap passed under a railway line viaduct, crossed the South Esk River via the wooden Kings Bridge, turned hard right at the doorstep of the Longford Hotel, passed over the railway line using a level crossing and traversed the South Esk again via another wooden structure, the Long Bridge.