Whinlatter?! This is what’s wrong when tourists come to Cumbria!
There’s excellent trails, as mentioned, from Pooley Bridge, plus loads around High Street. Then there’s also the other side of Ullswater, up and around Helvellyn. Even getting closer to Keswick there’s Lonscale Fell and other rides from either Mungrisdale or Threlkeld. Then Keswick, the Borrowdale Bash! All closer to Whinfell than Whinlatter!
Whinlatter has its place, but surely you’d rather experience the Lakes instead of a man-made trail centre?