St Bees (Cumbria) to Robinhoods Bay (N.Yorks) is the one to go for if referring to offroad/mtb. It pretty much follows the old Wainwrights route and was well published in book form though i think its not in publication currently. The book's recommended time is 8 days but me and my mate did in 4 with car support. Our route was… ST.Bs to Boot, Bt to Shap, Shp to Osmotherly and Osmoth RHB. Try the EBay for the guide book?