♡ gravel segment George S. Mickelson Trail: Mystic to Hill City bike gravelmap.com 22.5 km 489 m gain
♡ gravel segment Forest Service Road 256 to Custer Crossing Road bike gravelmap.com 5.6 km 241 m gain
♡ gravel segment South Rapid Creek Road to George S. Mickelson Trail bike gravelmap.com 6.6 km 164 m gain
