Google Maps recently added the ability to put points and routes onto Google Maps and save the results. It's really easy to use. You can even attach photos or videos. (Note: you'll need a Google account, if you use Gmail you already have one, if not, it's free and easy to register.)
For example, here's one of my regular running routes:
Saskatoon Running Route
Of course, it can be used for a lot of other things - check out some of their featured maps.