[darkpuppet]

a couple of pointers that'll help
1 ) get out canoeing with your team... make sure they know how to paddle properly, switch properly, and steer the boat properly.
2 ) to save on blisters (your shoes are nearly guaranteed to get wet), wear day hikers with a medium-soft sole with wool socks. They are heavier than runners, but you're a lot less likely to blister. Or at least test out your shoes/socks combo wet on a cross country run to identify the hot spots so you can wrap ahead of time.
3 ) The RtN organizers are devious.. don't be surprised if there are some 'surprises' along the way -- I don't want to ruin it if it's your first.
4 ) you may want to skip synthetics and see if you can get a light wool bottom layer. I was wearing MEC 'dry-fit' shirts and chafed an outline of my camelback on myself.
5 ) get on your 'adventure race diet' a week before the event. Putting your intestines into distress the day of the event sucks.
6 ) if you're not sure of your direction, stop running... you'll miss less checkpoints this way.

oh, and are you doing the 8 hour, or the longer races? the 8 hour race tends to use less accurate maps -- no biggie, but it means you need to keep your eyes open for checkpoints you may be passing by inadvertently.

All in all, it's a great time. YOu should have lots of fun...