Montgomery County, MD's area is 507 square miles.
Baltimore County, MD is 682 sq miles.
Garret County, MD: 656 sq miles (1,699 km²)
Maryland has a total area of 10,460 square miles.
73 miles
Odenton, Maryland covers an area of 12.4 square miles.
Frederick, Maryland has a total area of 23.69 square miles.
Actually, there is no ocean or ocean resort between Garrett County MD and Hagerstown MD. You might be thinking of Ocean City, MD which is about 205 road miles southeast of Hagerstown.
Washington County, Maryland, covers an area of approximately 467 square miles. It is located in the western part of the state and is bordered by Pennsylvania to the north and West Virginia to the south. The county features a mix of rural and urban areas, with Hagerstown as its largest city.
40 miles taking this route:Take MD-200 (Inter-County Connector) (toll road) EAST, from Rockville, to I-95 NORTH to BALTIMORE.Take I-95 NORTH to BALTIMORE.
Carroll County
Carroll County, Maryland, covers an area of approximately 448 square miles. It is located in the central part of the state and is characterized by a mix of rural and suburban communities. The county is bordered by several other counties, including Baltimore County to the east and Frederick County to the west. It has a population of around 170,000 residents, making it a relatively spacious area with diverse landscapes.
Howard County, MD, is approximately 20 to 30 miles away from Rockville, MD, depending on the specific locations within each area. The driving distance typically takes around 30 to 45 minutes, depending on traffic conditions. The most common routes involve taking I-95 or I-270.