The southern end of the A19 starts at the "St Mary's Roundabout" with the A630 "Church Way" and A638 just to the north of Doncaster itself near to the parish church; this junction has been improved in recent years. It leaves the A638 at the next roundabout as "Bentley Road", and then winds its way over the East Coast Main Line, which it follows through Selby and York, through the suburb of Bentley passing the Shell "Bentley Service Station", St Peter's church and the "Druid's Arms" and out into the countryside to the north of the urban area. It then passes the Pavilion exhibition centre.