The Ramblers web site now contains descriptions of walks all over the country. These can be accessed on http://www.ramblers.co.uk/walksfinder/search.php.
You can add descriptions of your own walks or check walks submitted by other ramblers by going onto the website www.ramblersroutes.org. You will have to do some simple on line training before you can use the site. This a very useful method of planning walks.