GMap Pedometer is a Google maps mashup that combines the ability to find locations to run, walk, jog, and cycle with the power of Google maps. This site allows you to plot your trip before you leave and figure out how far in miles the trip will be. It also will calculate how many calories you will burn based on your weight.

The creator of the site was looking for a way to track his marathon runs and to know the exact distance each leg of the race is. He was looking for a way to do this without taking a GPS or a pedometer with him on his runs. This website solves this problem by allowing you to take control of Google Maps and overlay your own info onto it.

So what makes this different from the original site? Can’t you just make driving directions using Google maps and then use that for your runs or walks? You could if point A and B didn’t involve a freeway (since you cant ride a bike or walk on a freeway legally). What this does that is different from “driving directions” is that you can “plot” your trip, take small side streets, cut through a park, or even map your trip around a park. This is something that Google map’s driving directions cannot do.

So how easy is it to use? Very easy, you start by searching for the area you want to work with using the input boxes on the top of the site, just like you would Google Maps. After that you move the map until you find your starting position and double click. Since the site allows you to go anywhere (even through buildings since it doesn’t know any better) you can move the map a bit and make another plot on the map by double clicking again. Once you plot all the legs of the trip you can save the route, print the route export to a GPX file for later use in a GPS or calculate the calories burned during your trip.

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