We use a free website called Map My Run to calculate walking, jogging, and biking routes throughout our neighborhood. I find that it is easier to calculate distance than sites like Mapquest and Google Maps. Plus, it allows you to plan routes that may or may not follow streets, which I find gives me more accurate calculations. There are tons of features on the website that I have not begun to explore. I know you can find routes in your area designed by others and even find out the elevation along your route (helpful in a hilly area like NH). Try it out. Let me know what you find.