Michigan State Route 66 is a north-south highway across Montcalm County. It runs from the Mecosta/Montcalm County Line, north of Six Lakes, to the Ionia/Montcalm County Line, near Fenwick. MI St Rt 66 passes through the following towns in Montcalm County. Six Lake Stanton
Sheridan
MI St Rt 66 is multi-plexed in Montcalm County. Michgian State Route 46, from Six Lakes to near Edmore.
SB MI St Rt 66 south of east MI St Rt 46. SB MI St Rt 66 north of Stanton. SB MI St Rt 66 north of Main Street in Stanton. SB MI St Rt 66 near Hill St in Stanton. A guide sign on SB MI St Rt 66. SB MI St Rt 66 south of Main Street in Stanton. SB MI St Rt 66 south of Stanton. SB MI St Rt 66 north of Sheridan. SB MI St Rt 66 near St. Clair in Sheridan. SB MI St Rt 66 south of Sheridan. SB MI St Rt 66 north of MI St Rt 57. SB MI St Rt 66 at MI St Rt 57. SB MI St Rt 66 south of MI St Rt 57. SB MI St Rt 57 near Fenwick. SB MI St Rt 66 south of Fenwick. NB MI St Rt 66 Ionia/Montcalm County Line.