Pretty decent ride that, not mega miles but defo some good stuff in there. Not my choice if I had all day but then that’s amoo (a matter of opinion, for ttgas)
Start on the main road in Castleton, head up the broken road, Rushup Edge, Chapel Gate, climb back to Mam Nick, descend Greenland, Climb to Hollins Cross, descend Back Tor Farm, Jaggers Clough to Hope Cross, Descend the Beast (fluffy cat) steep fire road climb to Wooler Knoll, descend Hope Brink, tarmac to either Brough and climb to Bradwell Edge or climb past Shatton Mast to Bradwell Edge, Descend into Bradwell and then pick up the track behind the cement works back to Castleton. If your legs are up for it climb up Pindale and along to finish on Cavedale.
You can make it even longer by adding a run over Lockerbrook and Zhores farms, round to Fairholmes, climb the slabs and long to WTL, descend to the pub, tarmac through Thornhill and pick up th Dhatton Mast climb.
Whatever you choose you enjoy it.