A friend of mine is planning a 500 mile walk for a local charity this December/ January which will include taking two horses on the journey. The route is basically around the perimeter of Yorkshire with a few exceptions including New Years Eve at Tan Hill and crossing the River Humber or Ouse at some stage. I am helping with the route plan and would like to know if there are maps showing routes accessible to horses only, i.e. filtering out footpaths to include just bridleways and roads. Any ideas anyone, your help would be greatly appreciated. All this is in support of a local charity, I Choose Life Foundation. Thank you.