about 390km
At the closest point, 22 miles. Last Saturday the weather was excellent and the white cliffs of Dover were in plain view from just outside Calsis.
From White Cliffs to Broken Hill is a distance of 287 km, travelling through Wilcannia. The trip takes about three and a half hours.
the moving water is what actually forms the cliffs. as the water / tides come in then the water hits the rocks and starts to erode them, as this erosion continues it startes to cut into the base of the rocks there, eventually over time the undercut will go so far that the rock over hanging it is too heavy and falls into the sea, this then creates a new piece of cliff....and this cycle continues. for examples look at black gang chine in the isle of white (uk) or the white cliffs of dover (uk) hope this helps
The distance from the coast to your location inland.
As far as I know there is no ferry service between Dover and Belgium anymore. From Dover you have a ferry to Calais in France.
22 miles
About 280 miles.
By road, 77.2 miles.
About 100 miles
it reach far far in
Portland Oregon is approximately 65 miles inland.