If you want a led walk and haven't found what you want under the Leeds Group walks on this site then this the place to look Ramblers Walk Finder. Put in your post code or town under "where do you want to walk" and then click search. I suggest that you click on the heading "group walks" to see the walks in a list, but this is just my personal preference. Then at the bottom on the right make sure "walks run by" or "organiser" is set to "all areas". You will then see a list of all led Rambler walks by all groups. Remember you can walk with any group. Worth exploring all the settings on this site. It's all self explanatory.
This link should list all walks by all Rambler groups within 25 miles of Leeds All Rambler Group Walks
Self Guided Walks
This is a list of web sites giving ideas for walks. Most are free but some do require a fee. You use these sites and the walking guides in them entirely at your own risk
First, did you know about this? Have you ever used it? This is The Ramblers own list of walking routes. It's well worth a look RamblersRoutes
These are web sites with lots of walking routes. Most have been prepared by enthusiastic amateurs.