here goes with something more useful…
from Unstone I’d follow backroads to join Meadowhead just north of the big roundabout on the ringroad then follow chesterfield road into the centre. you won’t be flying along but you won’t be going fast anywhere between you and the centre.
On the way home you’ll need a very small amount of MTFU but neither homebase hill nor the climb up to meadowhead is that bad (I reckon they’re both easier than the climb you did on the way in in the morning)
good luck with the riding in. Chasing cars up hills is a good way to build some fitness