In reply to Andy27:
No GPX files but a good 20 miler is
Ladybower near A57/A6013 junction
Road via Yorkshire Bridge and Thornhill to Aston
Up onto Hope Brink via Edge Farm (short steep part but mostly grass or track)
Along to Hope Cross
Blackley Clough/potato alley/Blackley Hey down to Rowlee Bridge (fairly technical stony descent but OK. "Potato" refers to the size of the many stones covering the track)
Across and up past Rowlee Farm to junction above Hagg Farm (good surface)
Down past Lockerbrook centre to nr Gores Farm (fast and fun, increasingly steep at end, short techy bits)
Road to Fairholmes
Round far side of Ladybower to Grindle CLough
CLimb towards Wheel Stones and traverse track to WHinstone Lee Tor (bastard climb up flagstones then rough narrow track, after that OK and traverse is very pleasant)
East to Cutthroat Bridge (fast and enjoyable, not very technical)
Down track Parallel to road via pub and back to car (pebbly and stony but not too bad)