Additional local trains plied the tracks between Casino and Murwillumbah, connecting with other services such as the "Brisbane Express" and "Brisbane Limited". The 3 km extension from Murwillumbah station to Condong was for sugar mill traffic. 620/720 class railcars also worked this line (set 638/738, which was specially modified, and also hauled a small van). The line to Condong Sugar Mill used to run over a section of the old Pacific Highway (now Tweed Valley Way) - when cane trains would unload, they blocked north and southbound traffic, disgruntling some impatient motorists. The level crossing was removed following the closure of the old sugar mill and subsequently, the trains did not travel any further than Murwillumbah station from 1975 onwards.