SR 170 clips the southeast corner of Webster before it enters the unincorporated territory of Prentiss.

It curves towards the west and re-enters Webster, this time at its northeast corner, before entering the unincorporated territory of Kingman.

[1] At first, the road through Kingman is sparsely populated passing mainly through forest areas.

SR 170 passes a small farm before crossing the Mattawamkeag River and bending 90 degrees to the west and entering the town center.

It passes some small farms and houses before coming to an end at U.S. Route 2 near the Mattawamkeag River.