https://www.gaiagps.com/datasummary/track/1e976aad-612c-4c30-9aa8-a57dc258bd87/?layer=GaiaTopoRasterFeet This route crosses the state land Sandsage Bison Range and Wildlife Area (Garden City, KS) between the two gates. Their are numerous spur paths along the way, but this seems to be get the most traffic. The area is home to a herd of 80-100 bison and as the name implies is dominated by sand and sage. This is the brochure for the area https://ksoutdoors.com/content/download/1042/5014/file/SANDSGE%20BISON%20RANGE.pdf however there are many routes that are not shown on the map, and no directional signage, so it is essential to study the map before hand and have it available.
The out & back is about 11.5 miles.