Map of Deerfield Lake Loop Trail No. 40L
The Deerfield Lake Loop Trail No. 40L is nestled right in the middle of the Black Hills National Forest, northwest of Hill City and Custer, south of Lead and Deadwood and due west of Rapid City, this trail is within reasonable driving distance no matter where you are in the Black Hills. This trail, which encircles Deerfield Lake, is not overly technical but has a fairly substantial amount of elevation change given its distance. The Lake Loop Trail makes an excellent destination for hikers and horseback riders and while it is a good mountain bike trail, there are better cycling destinations in the Black Hills.