Gmaps Pedometer

[dvdmon]

Gmaps Pedometer is a "hack" or "mod" of Google Maps that lets you plot a path or route for walking/running/cycling, etc. You can plot it exactly down to the yard or so and get accurate measurements of distance, calories burned, and even elevation:

http://www.gmap-pedometer.com/

[dvdmon]

Very similar to Gmaps Pedometer is another tool:

http://www.mapmyrun.com/

This has the same basic features, and is a bit more well-designed and has some added capabilities that Gmaps Pedometer does not.