Goodwood railway station is the junction station for the Belair, Seaford and Flinders lines. The Belair line diverges south-east towards Millswood, while the Seaford and Flinders lines diverge south-west towards Clarence Park. The Glenelg tram line crosses over the railway lines at the south end of Goodwood station. The station services the Adelaide inner-southern suburb of Goodwood, and is 5.0 km from Adelaide station.

The Belair line is a suburban rail commuter route in the city of Adelaide, South Australia, that runs from the Adelaide station to Belair in the Adelaide Hills via the Adelaide-Wolseley line using diesel 3000/3100 class railcars. Prior to 1995, this part of Adelaide-Wolseley was a two-track broad gauge line. In 1995, Adelaide-Wolseley was converted to standard gauge meaning Adelaide to Belair is now effectively two separate single-track lines running in parallel: the Belair commuter line and the Adelaide-Wolseley standard gauge freight line.