Distance from to

Distance between Rockville and St. Mary's County

Distance between Rockville and St. Mary's County is 128.55 km. This distance is equal to 79.88 miles, and 69.37 nautical miles.

The distance line on map shows distance from Rockville to St. Mary's County between two cities.
If you travel with an airplane (which has average speed of 560 miles per hour) between Rockville to St. Mary's County,
It takes 0.14 hours to arrive.

Rockville 39.0839973 -77.1527578
St. Mary's County 38.1060259 -76.3637285
Distance 128.55 km 79.88 miles

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