Admittedly, it was more walk than run, but last night I five miles in an hour and 15 minutes. I'm suprisingly not sore today - everything but a little place on my left shin feels fine. It was super hot outside, and I lost a crazy 3 pounds from my before-run weigh in to my post run weigh in.
How do you hydrate when it's hot outside? When I'm inside at the Y, I keep water or Powereade Zero on my treadmill or along the track. Outside, I either try to pick a route with drinking fountains, or do a loop that lets me stash water in my car. I don't fuel during runs, since my stomach has enough issues without food + activity.