The A170 is an A road in North Yorkshire, England that links Thirsk with Scarborough through Hambleton, Helmsley, Kirkbymoorside, and Pickering.

When turnpikes were installed between York and Coxwold and Ampleforth, drovers would take their cattle this way because it was wide enough and meant they avoided paying the tolls.

After about 5 miles (8 km) and passing through the village of Sutton-Under-Whitestonecliffe, it enters the North York Moors National Park and the Hambleton Hills and reaches the three sections of very steep (1 in 4 (25%)) gradients of Sutton Bank.

[3] The road continues east across Scawton Moor for 6 miles (9.7 km) before there is a 90° turn to the north and the B1257 joins from the south.

The road continues eastwards out of Pickering, and just short of 1 mile (1.6 km) it leaves the North York Moors National Park.