The A570 is a primary route in Northern England, that runs from St Helens to Southport.

The road continues in a north-westerly direction, bypassing Rainford to dual carriageway standard.

It crosses the border into Lancashire, before reaching junction 3 of the M58 motorway.

North-west of Ormskirk, it crosses over the Leeds and Liverpool Canal, and meets the A5147 road near Scarisbrick.

Shortly afterwards, it crosses the border back into Merseyside, and reaches the town of Southport.