Here are a couple of my recent walks... (you may have to click "hybrid" on the map)
Payton County Park
The Everytrail folks also have a blog and the latest post was pretty interesting. The post refers to a New York Times story about GPS drawing. In a nutshell, GPS drawers map out and follow a course that will result in an image when viewed from a satellite.
Here is what it looks like...
(images from Everytrail Blog)