This is my route to work. I walk to work, home for lunch, back to work, home at the end of the day. It not quite a mile, however there is a bit more to this then a flat map shows.

The minimum elevation is 449 feet (above sea level). The maximum elevation is 607 feet. This puts my walk at a vertical 128 feet with a -184 foot decent (you reverse those for the walk home).

Typically it takes me 10 to 15 minutes depending upon my walking speed. With wind sprints included I am around the 8 minute mark. I figure that is 400 calories a day burned walking.