82 miles
Assuming you're in the UK, Kent is 1442 square miles.
Kent County, MI covers approximately 872 square miles.
Basingstoke, England - 245 square miles.
Barnsley, England - 127 square miles.
Northumberland, England - 2,019 square miles.
About 60 miles north using the M25 and M11.
Yorkshire, England - 4,595.77 square miles (as of 1991).
Liverpool, England covers 43.18 square miles.
Manchester, England - 44.7 sq miles.
Brighton, East Sussex, England - 22 square miles
Lancashire, England - 1,121 sq miles.