Where in Glossop are you?
I live in Simmondley and have the choice of riding off road from Charlesworth (Town Lane) up the Salt Road up onto Coombes Edge and then round to the Pennine bridleway. From there you can go towards Rowarth, Marple and Roman Lakes or towards Lantern Pike and then onto many routes around Hayfield.
You can also just ride up Chunal, once here you could go down to the bottom of Shooting Cabins or turn right at the Grouse Pub and join the Pennine bridleway from here.
If you ride out of Glossop on the A57 towards Woolley Bridge, if you ride down the side of the Gun Inn you can ride off road over Hobson’s Moor and there are a few alternative routes once over this way.
Glossop riders really are blessed with easy access to off road riding and access to the peak without using a car.
OAP above is correct, I’m sure BWD will be along at some point to answer this in a fuller fashion.