Its southern terminus is at Route 273 north of Tracy.

Route 371 is a highway that begins in St. Joseph, Missouri and ends in Tracy, north of Platte City.

Continuing south, it passes through Faucett on the west side.

Afterward, it intersects with Route 116. then continues south until it reaches New Market.

It then intersects with Route 273 and shortly after ends at an interchange with I-29/US 71.