For those of you walkers, runners, and cyclists out there...
Check out Mapmyrun.com or mapmyride.com.
As the name states you can map your run or bike route over a google map. IT then will tell you how far the route is and you can see a profile of what the elevation change was.
Other cool features include a calorie calculator based on the workout you map and a workout log calendar. The calendar is cool because it will calculate calories burned for several types of activities (swimming weights whatever) You can also look at other routes in your area.
It is pretty cool. You can set up competitions with your friends. Right now I am trying to beat my dad in mileage and calories burned.
It is a good motivator.
Check it out.
And no I am not tied to the site in any way. I just like to use it.