I may have mentioned this before... but has anyone done the Dun Fell Road from the Eden Valley up onto the top of the Cross Fell Range....? Seems to have a reputation on the internet as one of the toughest in England.
It's approx 5 miles and 2000-something feet once turning off the road linking the villages together. Road to nowhere (except a radar station) and a popular haunt of cyclists.
It's actually been a favoured training run of mine, a good hard 10 mile race up and down where you can just get head down and go at it without worry (except for cyclists coming down at 50mph!)
Have had some good races up against cyclists, they murder me up the lower section, but when it really pulls up in the 2nd half i have the upper hand.... i haven't beaten many cyclists down though!