The M4 Motorway is a 50.2-kilometre-long (31.2 mi) dual carriageway partially tolled motorway in Sydney, New South Wales, Australia that is designated as the M4 route. The M4 designation is part of the wider A4 and M4 route designation, the M4 runs parallel/below ground to the Great Western Highway and Parramatta Road (A44). The M4 route number comprises two connected parts: The M4 cycleway runs parallel to the M4 Motorway between Sydney Olympic Park and South Wentworthville.