Coudehard (in Orne 61) is 12 miles North East of Argentan

Maps and estimated car journey times from all the main French ferry ports are below
[for Ferry Operators details please see the "Useful Websites" section]

Caen is approximately 45 miles and takes about 1 hour by car

Le Havre is approximately 60 miles and takes about 1½ hours by car

Dieppe is approximately 115 miles and takes about 2½ hours by car

Cherbourg is approximately 115 miles and takes about 2½ hours by car

Calais is approximately 210 miles and takes about 3½ hours by car