Missouri Route 37

Route 37 begins as a continuation of Arkansas Highway 37 which starts about one half of a mile south of the state line in Gateway, Arkansas. It then passes through Seligman and intersects the southern terminus of Route 112. Route 37 then intersects Route 90 in Washburn and then enters Cassville, where it intersects Route 86 and the northern terminus of Route 112. From here, it produces a business route that goes through Downtown Cassville. Route 37 continues north all the way into Monet where it intersects US 60 before it turns west. The junction of US 60 is where Route 37 becomes part of the Trail of Tears Automobile Route going all the way down to the Arkansas state line. It then goes through Pierce City where it forms a Wrong way concurrency with Route 97 for 0.2 miles (0.32 km).

Route 37 continues northwest, passing through Wentworth and Sarcoxie. It becomes concurrent with Interstate 44 Business as it heads west from Sarcoxie, also forming a wrong way concurrency until it interchanges Interstate 44. It then continues north, passing through Reeds and then Avilla, where it runs concurrent with Route 96. After leaving Avilla, Route 37 continues north and enters Golden City. It becomes concurrent with Route 126 before it reaches its northern terminus while Route 126 reaches its eastern terminus at the junction of US 160.