The first 1/2 to 3/4 mile is tarmac, then there is a 1/2 mile section in the middle that is also tarmac. I completed in mudroc 290's in 2007, will use roclites this time around most likely but have some walshes in reserve, there is a section of steep descent which is worthy of studs, but you need a reasonable tread in any event. If its not frozen then it will be wet with all the snow melt.
Nowt wrong with it being on the fell calendar, nice christmas new year social, bit of everything for the variety of people who do the race and a nice intro for people new to the sport, plus plenty of local spectator support.
And signing on is in the Royal Oak pub.