Second the Kentmere Horseshoe - one of my favourite days out in the Lakes.
A walk I did earlier this year was from Pooley Bridge up to Ramsgill Head along High Street, taking in several Wainwrights (Arthurs Pike, Loadpot Hill, Wether Hill, High Raise, Kidsty Pike, Rampsgill Head), then dropping down to Patterdale via The Knott, Angletarn Pikes and Brock Craggs. Bus back to Pooley Bridge. If you time it right there's even time for a pint in the White Lion while waiting for the bus. Around 15 miles, walking into fantastic views.
Paul