Milford Mill Road, Slade Avenue, and Smith Avenue are a long road mostly in Baltimore County, Maryland that runs through Milford Mill and Pikesville in the suburbs of Baltimore. The road starts out at the light rail stop in historic Mt. Washington Village in Baltimore city as Smith Avenue, and continues through Pikesville up to Seven Mile Lane before its name changes to Slade Avenue, and the road widens to four lanes. The road is known as Slade Avenue until Reisterstown Road, and from there, its name becomes Milford Mill Road until it dead-ends one block south of Rolling Road in an area known as Windsor Mill. It is one of the most heavily used routes in the northwest suburbs of Baltimore, as it is used for cross-county travel by motorists between the Pikesville and Randallstown areas.