I also did the Rugby Rover too. There was a lot more tarmac than I expected. I'd have been better off in road shoes (if I had any) as my feet were as sore as hell over the last 2 miles I reckon there is about 4 miles of tarmac but there is also a lot of hard packed trail too. Organisation, way-marking and marshalling was excellent though. Never had to use the map at all and there were loads of jelly babies to scoff! . We were warned that it was muddy but it wasn't, my shoes were still as clean at the finish as they were at the start! It's a good event as long as you go with the expectation of a long multi-terrain run rather than a tough fell race. IMHO