The route you described sounds like a lot more than 500 steps! Have you tested your device for accuracy (manually counting steps for a bit and then seeing if it has counted accurately?)? I'm sure you have; it's just that it *sounds* like you're doing so much more.

Hey, if you'd gone on a walk around the block at the other-people's-house on Sunday, I think you'd have gotten a good amount of steps in; I think their 'block' is bigger than yours :)