It is a fantastic area to run in. Had the pleasure of staying in Eskdale a couple of years ago, and did most of this route in reverse on a training run. If anything, the lower fells on the other side of Eskdale valley are even quieter and more remote as well...
If you like this sort of quiet race with plenty of route choice, I'd definitely recommend Arenig Fawr in mid-ish Wales in August. Although it does clash on a weekend with a number of other races, Borrowdale for one...
See you at South Mynd...