Badlands Loop Scenic Byway At a Glance Distance: 39 miles Trip Length: 1 day Start/Stop: Wall or Cactus Flat As you enter the Badlands on pin-straight SD Highway 240, rolling grasslands give way to otherworldly rock formations that could be mistaken for prehistoric sandcastles. Just one hour from Rapid City, this is a place that was once roamed by ancient horses and saber-toothed cats, and its 244,000 acres still brim with wildlife. 16 // #HiFromSD Badlands National Park