As I start to run longer distances, I eventually want to get the Garmin Forerunner 201, which has GPS in it, plus a whole bunch of other neat stuff that you can read about if you follow the link.  Until that purchase is made, I needed some way to measure out some routes, as I start running for distance tomorrow instead of time.  I did a little searching and found this little dandy that somebody did using Google Maps (http://www.sueandpaul.com/gmapPedometer/).  You can even permalink routes that you've built, so tomorrow, I'll be running this route.

UPDATE: The link has changed to http://www.gmap-pedometer.com/.