Map 21 of the BTRG. This route runs south from the 30th sdrd to county road 21. There is a parking lot on the south side of the 30th sdrd. It's a short walk west to the trail. Head south to county road 21 and return. This was my first time on this route. It won't be my last. This is a unmaintained rd. No traffic. Very pretty. Easy walking. Good place to take your kids. Walk on .