PR for the mile!

I ended up running twice on our vacation, just two miles each time. And each time I got a PR for the mile! Woo hoo!! The first day I ran it was 10:20, then the second time I ran it was 10:01. I was a little annoyed I came so close to breaking under 10:00. I could have kicked it into higher gear at the end had I realized. I'm not sure what the reason is for my increased speed--cooler weather, lower altitude, my breathing is better from swimming. I don't know, but I sure hope it can keep up on runs at home. Especially since I've already registered for next year's Phoenix Rock and Roll Half Marathon with an estimated finish time of 2:15...I'll have to run around a 10:00 pace if I want to finish within that goal!