By road, 77.2 miles.
About 75 miles
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.
About 100 miles
about 390km
the coastline distance from southall to dover is approx 78 miles which is 1-3 hours drive
From Dover it is 514 miles
3900 miles
About the same distance as Baltimore to Canada.
There are many. To name just a few: Stonehenge, Westminster, the White cliffs of Dover, the Uffington White Horse and York Minster.
It's about 150 miles or a three-hour drive to Bolivar, WV, the closest city to Dover.