There was nothing about dogs highlighted in the walk description I've used so I'll assume it'll be ok for dogs. It is across a lot of farm fields so I don't know how much 'off lead' action the dog will get.
We'll be meeting outside the Methodist Church (The main A67 road entrance) in Barnard Castle at 11am. Hopefully at this time of day there should be plenty of free parking spaces available. We will then car share to Gainford for a 11:30 start. I have to confess that I miscalculated the walk distance ...