The Western system runs over 1,082 route km and consists of the corridor from Miles to Cunnamulla with branch lines – Westgate to Quilpie, Dalby to Glenmorgan, and Miles to Wandoan.
The Western system adjoins the western section of the West Moreton system at Miles with the Western system, with Western system branch lines running directly off the West Moreton system.
The Western system caters primarily for agricultural products – particularly livestock and grain. The Westlander long-distance passenger service runs two times per week between Brisbane and Charleville.