A mile PR on marathon legs

Thursday night was this summer's second NOTC All-Comers Track Meet. Since I attended last time (my first ever "track meet"!) I felt like an old pro this time around. As soon as I arrived I knew it was a better day: following a heavy rain, the track was soaked and humid but far cooler than the last meet. I decided to try for a mile PR.
This should have been easy, since my fastest timed mile was just under 6 minutes. And it was, with the exception of one good-gracious-awful mishap.

I ran a nearly effortless 5:46, negative splitting the second half by 9 seconds. Yay for a mile PR on tired legs!!!

But the mishap is far more interesting. I was wearing my new shorts - the ones whose praises I was just singing - and this was the first time I put my heavy car key in the key pocket.
The key pocket is really soft and stretchy.
As soon as I started running, the key flopped out and landed in the built-in briefs. Yep. Now go ahead and think of all the painful scenarios, and they happened.

I now have a new mile PR and an abrasion that looks like an amputation attempt on my left leg.

The rest of the meet sucked a little. Although the mile felt pretty easy, it tired me out, and for some reason these late, fast races kill my blood sugar. Just like last time, my hands were shaking by the 800m and by the 2 mile I was downright woozy. I ran a 73 sec 400, a 2:50 800. and a 12:50 2-mile. By the end of that I was so tired and hungry I didn't even have the energy to jog to my car.

And now in the bad news column, as you might have guessed, I did too much this last week (marathon unprepared, speedwork, track race). I have pain in my hamstrings, some nagging thigh-splint type pain on both legs, and an appalling knot in my left calf that I cannot, cannot, cannot massage out. It is the size of a walnut and visible externally. So, basically, I did stupid, over-zealous, post-injury runner stuff. I do not want an injury returning, so I took off three days and will probably take off more until the aches go away and my calf looks like a normal leg again. A week or two off won't kill me, and I have no races coming up to train for, so backing off again won't mess up any plans. However, I am mad at myself for doing too much. I distinctly promised myself not to get into this situation, and until now have been very good about a slow, moderate return to running! So, bad choices. Will try to do better in the future.