In reply to contrariousjim:
Well you know you can run the distance, so it isn't just about completing, this is a good start. Obviously what training you do in the next two weeks isn't going to make much difference to your fitness, so what you need to understand is pacing and what it feels like to run a good 10k.
I find 10k really hard, 5k is a pain fest, but at least it is a short one, 10k is nearly as fast, but obviously lasts longer, half marathon is run at a more comfortable pace with the challenge generally being about maintaining it over the last 3 or 4 miles.
You 10k should not be much more than 5k PB x 2 + 1-1.30 minutes. Mine is 5k PB x 2 + 54 seconds. Pace yourself on that basis. If you are not sure how fast you are based on current fitness, run a mile hard in training after a warm up and work it out from that, for example if you run a single mile in 7.40, aim to run at 8.00 pace.
It will hurt if you do it properly, don't use this as an excuse to slow down. Run, but have an easy week next week.