I've also got what looks like a decent route near Ticknall/Donington that I keep meaning to try, which may also make for a worthwhile day out...
Care to share? I've done a bit of riding round there - it's only just up the road from me.
There was a route in STW 18 months ago from Ticknall, round Robin Wood, Foremark reservoir, Repton Shrubs, Bretby and back. 30 km with perhaps 75-80% on bridleways etc. I have ridden some of it - and very pleasant it is round there too ! Some of it is sandy so well drained but there were also some really sticky bits.