Keswick area- all dayer- Borrowdale Bash with Walla crag -ash ness bridge start, at rosthwaite head up langstrath right of the river, cross at the bridge just before stake pass and climb up there. At the top, head across to angle tarn, esk hause, styhead, down to seatoller to continue the bash. This is a big day, can be reduced by parking at rosthwaite and just doing langstrath to seatoller loop, that’s about 4 hours, and can be extended by dropping down to the bottom of stake pass on the Langdale side and climbing the purgatory that is Rosset Gill to continue the route.
Shorter ride- Skiddaw summit , ulloock pike descent, about 3 hours, could tag on threlkeld- Skiddaw house- Lonsdale fell loop before climbing Skiddaw.
Lots of other possibilities.