Well, after seeing what happened to next year's Six Foot Track and how quickly it filled, I've gone ahead and entered NF100! Excited and scared at the same time. I've done one 50k and had a bit of a shock with the hills. Definately under-prepared! I did better at this year's 6 foot track, but still had trouble with all the hills. Wll be concentrating a lot of my training on hill work; both up and down-hill. Lots of fun to look forward to. I want that buckle!