It is approximately 177 miles by car.
well it is a very big distace but i can easily work it out in about a minute it is 126.631 mile from Birimingham to Chichester
72.8 miles via M20
Kent, England - 1,442 square miles.
162 miles
39 miles
4766 miles
161 miles
235 miles
235 miles
103 miles
Which Mansfield and which Kent are you asking about?
Assuming you're in the UK, Kent is 1442 square miles.