GrabYourBoots.com - A brilliant site which allows you to search for free walking routes displayed on a map
Live for the OutdoorsCountry Walking and Trail magazines' website
Outdoor Magic - free routes
Fellscape - Walks and pubs in the Forest of Bowland
The Whittle Wanderer - Boyd Harris - walking pages
Discover Derbyshire and the Peak District - information on all aspects of the area from pubs to public transport
For walks in the Peak National Park
Yorkshire Dales walks
Routes in the Lake District
End to End - a site by John Butler, "Before I knew it I'd hatched a plan to walk from Land's End to John O'Groats, one extremity of Britain to the other. It would be done mainly on recognised long-distance paths, but where these didn't exist I'd make up a route of local footpaths or (in Scotland) forest tracks and estate roads."
Hilltours - Self-Guided Hiking Tours, where all the organisation is taken care of for you.