I just measured a new route for walking.

Big circle: 1.96 mi.
Small circle: 1.25 mi.

My goal for the end of the TDC fitness challenge is to walk 6.42 mi = 2 times big circle and 2 times small circle

I'll do this on a Saturday. Every week up to the end of the challenge, I'll walk a little more until I'm doing 6.42 mi. on the weekends. During the week I'll walk my regular distances.