It runs east–west in south Wisconsin from in Eastman to near Steuben.

Starting from WIS 27/CTH-D north of Eastman, WIS 179 meanders eastward.

As it travels east, it only intersects CTH-E before reaching WIS 131.

[1] Initially, WIS 179 used to be part of CTH-D.[2] Since 1947, a large part of CTH-D from Eastman to Steuben became WIS 179.

The entire route is in Crawford County.