A nice tool...

...to consider using is the training log at Runner's World.com.

It's pretty extensive. It actually allows you to map out routes on the roads around you, tells you the distance, and marks the miles out for you as well. Once you give each one a name, you can simply refer to it in the log by its name and the log will automatically add in the distance to the logging tool.

If you're a runner or training for something, it's a cool little deal...