Every time I complete a run, I am always trying to guess how far I ran. I don’t have to do that anymore thanks to RunningMap. RunningMap is a neat little website that allows you to utilize Yahoo! Maps and create routes on the streets where you live.
When you create a route, it will tell you the distance of the route in miles (for those of us in the U.S.) and kilometers (for our metric system buddies). You can simply create a route that is equal to a mile and run it back and forth depending on how many miles you wish to run (or bike!).
RunningMap also allows you to save all of your routes you created and to search for other routes created by users in your area. It even has the option to print the map, which might be useful if you want to take the route with you in case you get lost. (You never know!)

