Randolph Road is a county highway in the U.S. state of Maryland. The highway is the major component of a mostly four- to six-lane 16.8-mile (27.0 km) highway spanning southern Montgomery County and northwestern Prince George's County that also includes Montrose Road, Josiah Henson Memorial Parkway (née Montrose Parkway), and Cherry Hill Road, and forms an important link between eastern Montgomery County and Rockville. Montrose Road begins at Maryland Route 189 (MD 189) in Potomac. The highway heads east through a junction with Interstate 270 (I-270) before the main course continues as Josiah Henson Memorial Parkway in North Bethesda. Josiah Henson Memorial Parkway continues through a junction with MD 355, east of which the highway becomes Randolph Road. Randolph Road intersects MD 586 and