A friend said today you shouldn't use running shoes for more than 3 months. I looked it up and you're supposed to swap them out every 4-500 miles!

http://runnersconnect.net/running-injury-prevention/how-long-before-you-have-to-change-running-shoes/

If I run 2 miles 3x a week, that's a little over 300 miles a year. Maybe he runs more than me though.., which wouldn't be surprising! I probably need new running shoes anyway though.

How old are your running shoes?