Hi Ben
I believe the coastline to the west of Calais and running along the D day landing beaches is good for light laning but I have not heard of laning along the East
If heading for Antwerp I would take the Ramsgate ferry to Oostend and consider riding the Pilgrim's way in Kent.
[url]
http://www.ferrysavers.co.uk/ramsgate.htm[/url]
For the return take the excellent overnight ferry with a cabin (or board Casino / nightclub and someone elses cabin
) from Hook of Holland to Harwich
https://www.ferrysavers.co.uk/hook-of-holland.htm and then enjoy some great lanes heading back.
Meanwhile I tend to agree with Tom who I understand may have tackled the odd lane in the area. I have on recent occasion witnessed possibly the largest group of 4WD on UK lanes I have seen, all with Belgian number plates and being driven with little sympathy for the environment or other users. There must be a reason why. However I do also recall meeting a small group of very friendly Belgian trail riders near Waterloo. They explained it was their Sunday morning regular run and as in France there was no differentiation between in effect a Bridleway and a Byway. Basically they and my (French) Belgian friends informed me if you could take a mountain bike down it you could motorbike it and no-one would protest.
My main concern if you are heading to Antwerp would be the notable differences between the French speaking parts and the Flemish speaking parts of Belgium where I feel the French may be more permissive to Trail riding. This could be explained by the origins in Roman law of Rights of Road as we in England know it, and where I understand Roman rule stopped nearer the Rhine.
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