That's one of our favourite runs (although we don't normally go all the way to Hen Cloud). Mrs Noel has recently been raving about heading the other way (up to Wincle Minn) although I can't give you a detailed route description.
I'm a big fan of the Wildboarclough side of that area. For example, park in Wildboarclough, Up and down Shutlingsloe, past Clough House to run up Cumberland Brook to Danebower Hollow, then through the quaries to Three Shires Head, then back to the car (either directly or via Gradbach youth Hostel then over Tagsclough). The latter variation is about 10 miles and is lovely.
Good luck with the PB![]()