Route 1 begins at an intersection with Route 210 (Armour Road) in North Kansas City as Vernon Street. It travels to the north-northeast along Prather Road into Kansas City proper. Before crossing Parvin Road, the route curves northeast and then curves back to due north, at which point it becomes Antioch Road. Route 1 then has an interchange with Interstate 35 (I-35) and an intersection with U.S. Route 69 (US 69; Vivion Road). The route crosses Englewood Road into the city limits of Gladstone, continuing on from N.E. 64th Street as N. Prospect Avenue. It then continues due north to N.E. 72nd Street, and curves to the northeast, where it re-enters the city limits of Kansas City. Then Route 1 curves back to the north, becoming N. Indiana Avenue. The route ends at an interchange with Route 152.