Michigan State Route 20 runs east-west across Central Isabella County. It goes from the Isabella/Mecosta County Line, near Remus, to the Isabella/Bay County Line, east of Mt. Pleasant. MI St Rt 20 passes through the following town in Isabella County. Mt. Pleasant MI St Rt 20 is multi-plexed in Isabella County. BUSN U.S. Rt. 127, at Mt. Pleasant.
MI St Rt 20 intersects the following highways in Isabella County. BUSN U.S. Rt. 127, at Mt. Pleasant.
EB MI St Rt 20 at the Isbella/Mecosta County Line. EB MI St Rt 20 near Lake Isabella. EB MI St Rt 20 entering the Isabella Indian Reservation. EB MI St Rt 20 at the Chippewa River. EB MI St Rt 20 at Winn Road. EB MI St Rt 20 east of Winn Road. EB MI St Rt 20 at Bradley St. EB MI St Rt 20 at Wilson. EB MI St Rt 20 east of Wilson. EB MI St Rt 20 at University. EB MI St Rt 20 at south BUSN U.S. Rt. 127. NB BUSN U.S. Rt. 127/EB MI St Rt 20 near Maple. A guide marker on EB MI St Rt 20. A BGS on SB U.S. Rt. 127.
