South Dakota Hiking Trails Custer County    1. Cathedral Spires Trail    2. Grizzly Creek Trail    3. Lost Cabin Trail    4. Norbeck Trail    5. Paha Sapa Trail    6. Sunday Gulch Trail    7. Sylvan Lake Harney Trail    8. Willow Creek Trail Fall River County    9. Centennial Trail Harding County    10. Rimrock Trail    11. Rock Spring Trail Lawrence County    12. Rapid Creek Trail    13. Silver Arrow Trail (reviewed)    14. Big Hill Ski Trail    15. Iron Creek Trail (reviewed)    16. Pettigrew Trail    17. Rim Rock Trail Pennington County    18. Blackberry Trail    19. Flume Trail    20. Horse Thief Lake Trail    21. Iron Creek Trail    22. Iron Mountain Trail    23. Willow Creek - Rushmore Trail Union County    24. River Drive Trail