Thanks everyone.

I'm definitely keeping an eye on it. I felt a very slight twinge getting up this morning that could have just been a cramp but I'm just taking things very easy. For the next few days I'll do a casual flat (or as flat as Seattle gets) walk. I'll see how I feel on Saturday and maybe will try to do a slow 4-5 mile jog but probably won't.

It does suck that I was starting to do some speedwork which meant that I had a chance of actually winning my age group in this 5k at a Phish festival in August. If I were over 50 instead of just under, I'd feel like I had really good odds, but I don't know what the 45-50 crowd will look like on the day after a show. They might be hung over or there might be some real runners.