Good stuff. Despite the ongoing debate about whether its a trail or fell race, don't let the road/traily parts give you a false sense of security. Its rocky, can be boggy and the terrain is challenging in places. I agree with Steve, definitely trail shoes if the weather is good and possibly something grippier if it isn't. I ran the race is sunny conditions last year in INOV8 Roclites 315s. They were perfect for me. Ran it last weekend in Mudclaws due to the wet conditions and very boggy/muddy sections (plus an adapted route with less path), and was glad that I had the extra grip!
Hope you enjoy it, it was my first time last year and I loved it. I think its a brilliant race and will do it again (but have opted for the fellsman this year...ahhh!!).