Distance between Watertown and St. Mary's
Distance between Watertown and St. Mary's is 646.46 km. This distance is equal to 401.69 miles, and 348.83 nautical miles.
The distance line on map shows distance from Watertown to St. Mary's between two cities.
If you travel with an airplane (which has average speed of 560 miles per hour) between Watertown to St. Mary's,
It takes 0.72 hours to arrive.
| Watertown | 42.3709299 | -71.1828321 |
|---|---|---|
| St. Mary's | 38.1060259 | -76.3637285 |
| Distance | 646.46 km | 401.69 miles |
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