Since I've started tracking my runs (running with my Nike+ chip), I've run 1,000 miles! I hit the mark today! I began running with the chip on May 27, 2009. I started running in April of 2009. Of course, there were days I ran where I didn't wear it because I ran with friends, days my ipod wasn't charged, days I forget to calibrate it, etc. But you get the general idea.
179 hours, 25 minutes