Hi Jaci & Dean
Some great advice from Glen and Mike. It's not all about the K's and every year you hear of people who overtrain or run too far in preparation to be injured or over cooked for race day.
My longest training run for TNF has never been more than 45kms (mainly on trails) and I've finished sub 14hours. The key is plenty of strength training be that in the gym or on the hills. I do multiple reps on a 1km hill trail once or twice a week, a normal 15-20k easy run as a recovery/loosener, and then 30-40kms on the long weekend run. That way you get a day or two to recover and are less likely to get any overuse injuries.
I agree with Glen that you shouldn't do any more than you are currently for a couple of months at least, and just ramp up the intensity in that 6 weeks when you're 12 weeks out from race day. Don't be afraid to walk in training, you will be doing a lot of it in May, unless you're out to take out the title!
Another important point would be to train with your backpack on. It can make a massive difference come raceday, and again have seen too many people fall by the wayside as they were not used to having a pack on. Doesn't have to be filled with bricks, but you can increase the amount of stuff you have in it as you get stronger, so that come the start line you are comfortable with the extra weight. I do all my training with my pack fully loaded (around 5kgs inc 3l of water) and it actually feels odd to run without it now.
Listen to your bodies, as for this sort of distance (and more importantly, duration) there is no generic training program, you have to feel you way with what works for you.
I have written quite a bit about this, much inspired from this years TNF. Feel free to have a look around:
www.ultrarunning.com.auOne other thing make the most of training opportunities, like taking the stairs instead of the escalators. There's no escalators coming up out of Nellies Glen, if only!!
Best of luck with the training and enjoy the Mountains this weekend. It'll be a bit cooler in May ;-)
Happy Running
Andy