Quick jog through the park

Today is the Chicago Marathon, and the weather is perfect—for watching it. The runners hope the temperature stays below 21°C, but it's creeping up.

No matter: here are the lead runners passing through Lincoln Park about an hour and a half ago:

Even more fun is when the great mass of runners stampede through, like these folks running a four-hour pace:

Let's hope it stays cool for them.

Update, 9:40 am: Defending champion Sammy Wajiru just won the men's race.