I'd be inclined to forgo the long run and trust that the rest of your training will be enough. After all, missing one long run that is only a mile longer than your next-longest long run shouldn't kill months of training in one swell foop.
At this point you run more of a risk of messing things up by doing too much than too little. I keep telling myself in the last two weeks before a race that I can't do anything to make up for lost training or to improve things, but there are PLENTY of things I could do to completely wreck everything.
Relax and taper!
Edited by: VICKYTH at: 11/2/2009 (19:04)
MUN Run 5k : PB 26:06, Oct 24, 2009
Turkey Tea Ten: PB 54:16, Oct 11, 2009
"The will to win means nothing without the will to prepare."
-Juma Ikangaa, 1989 NYC Marathon winner