Thanks so much for all the support!  Here's the recap:

We camped out for the weekend with our two little kids (first camping trip for them - they did great!). My husband ran his first 10K on Saturday in crazy heat; luckily it cooled off a bit for Sunday's 25K.  The elevation map for the event was a bit intimdating - absolutely no flat at all in 15.5 miles of trails (some steep grades to boot).  I started out slow and steady and I felt great until mile 2.5 when my IT band started to act up.  Usually this happens after mile 10 or so; I think it was the combination of the steep terrain and the fact that my IT band had flared up a bit the week before and it hadn't quite settled down yet.  Whatever the case, 2.5 is early on in a 25K to be starting to ache.  But, I decided I'd just take it slow, walk as much as I needed to and if it got worse I'd consider my options. 

I found that I could survive the uphill at a fast hike and the small amounts of flat-ish land were runnable but what really got me was the downhill.  I had to hop down every hill on one leg and swing my other leg around like a peg leg and during those sections the pain was pretty bad.  The upshot that I wasn't prepared for was the tremendous support I got along the way.  People who were running the 50 mile version of the race gave me Advil, others spent time running along side me while I jog-limped along, and I found a group of other injured runners to chat and cheer along with as we supported each other through the miles.  I stopped and iced and stretched at each water stop, I ran when I could and walked when I had to and I just kept telling myself that fininshing = winning in this kind of situation.  When all was said and done I was able to run the last mile, even sprinting the finish.  My time barely even counts as a "run" really, but I was still proud of myself for finishing (and finishing safely) and I'm planning to do it again next year (hopefully injury-free).  In the meantime, I saw my doctor today and I'm seeing a PT this week to sort out the issue so that I can start to heal and move past this.  In the end, in spite of the difficulty (and it was easily the toughest race of my lfie, not because of the distance, but because of the injury) I really, really enjoyed it and I can't wait to do more long runs and more trail running.  So, all in all I'd call it a successful, even fun, race weekend in spite of a pretty annoying injury.