40 miles
Andrews AFB is 11.5 miles from Bolling AFB and takes approximately 24 minutes to drive between the two depending on traffic.
About an hour
Roughly forty miles
Not very far at all...
About 500 miles.
275 miles
238.39 miles
about 26 miles
About 211-220 miles or 4.5 hours. Depends on route taken, Google Maps will give you to options.
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.
About 280 miles.