 The M5 starts at 31st Street between Fifth and Sixth Avenues, using Sixth Avenue northbound and Fifth Avenue southbound until it reaches Central Park South.This corridor is shared by the M1, M2, M3 and M4 routes, and Sixth Avenue with the M7.There, the M5 runs crosstown along Central Park South (West 59th Street) and uptown along Broadway from Columbus Circle to West 72nd Street, where it crosses over to the southern terminus of Riverside Drive.