In reply to Lusk:
Are you trying to incorporate the cotton road into a walk. If so I would look at Waughs Well, Robin Hoods Well, Pilgrims Cross, Peel Tower, Darwen Tower or going the other way Stoodley, Cows Mouth, Blackstone Edge. The East Lancs moors are a superb place to walk and if you do a little research there is a lot of history up there. I love walking the Dales, Trough and Lakes, but the IMHO the East Lancs Moors have a special something that many people miss out on.
Shed loads of pubs, so until you get more Specific a bit tricky to recommend.
I know you have mentioned a circular walk, so in the great traditions of UKC I shall ask why limit yourself, a linear walk can give you more freedom and in that area with so much public transport, it could be very easy to arrange, and not expensive with a Rover Bus or Train Ticket.
Post edited at 08:20