The Westlink M7 Motorway or Westlink M7 – formerly Western Sydney Orbital – is one of Sydney's urban motorways and a part of the Sydney Orbital Network. It is a tolled motorway that is owned and operated by NorthWestern Roads Group (NWR) and connects three motorways: M5 South Western Motorway at Prestons, M4 Western Motorway at Eastern Creek and M2 Hills Motorway at Baulkham Hills. It opened on 16 December 2005, eight months ahead of schedule.