The A19 is a major road in England running approximately parallel to and east of the A1 road, although the two roads meet at the northern end of the A19, the two roads originally met at the southern end of the A19 in Doncaster but the old route of the A1 was changed to the A638. From Sunderland northwards, the route was formerly the A108. In the past the route was known as the East of Snaith-York-Thirsk-Stockton-on-Tees-Sunderland Trunk Road. Most traffic joins the A19, heading for Teesside, from the A168 at Dishforth Interchange. The road also inspired a song called A19 by the North East band Maximo Park
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.
Much of the course of the southern section of the A19 runs through the old Yorkshire coalfield, with evidence of old slag-heaps and colliery buildings. It passes through Toll Bar and the primary school. It passes through Askern, a former mining village. It meets the B1220 for Carcroft and goes through Owston, passing the Owston Park Lodge. Here it passes the Askern Hotel, Red Lion Hotel and Askern Service Station and goes over a level crossing. There is also a boating lake, St Peter's church and a greyhound stadium. There is a left turn for Norton. There are some long straights north of here, and the surrounds are mostly flat as the road heads towards the M62. It enters North Yorkshire and the district of Selby where it crosses the River Went near Walden Stubbs. There are some crossroads at Balne Moor, and it passes through Whitley Thorpe and Whitley and the George & Dragon. It meets the M62 at junction 34.