| O'Neil Pass | Lawrence, SD | 25.6 miles | SE |
| Red Gate | Meade, SD | 40.9 miles | SE |
| White Gate | Meade, SD | 41.1 miles | SE |
| Custer Gap | Pennington, SD | 46.4 miles | SE |
| Black Gap | Pennington, SD | 62.2 miles | SE |
| The Gap | Campbell, WY | 69.2 miles | SW |
| Jumpoff Divide | Harding, SD | 72.9 miles | NE |
| Summit Pass | Harding, SD | 73.8 miles | NE |
| J B Pass | Harding, SD | 74.1 miles | NE |
| Willard Gap | Harding, SD | 74.3 miles | NE |
| Gobbler Pass | Custer, SD | 78.8 miles | SE |
| Buffalo Gap | Custer, SD | 81.9 miles | SE |
| Reva Gap | Harding, SD | 82 miles | NE |
| Trenk Pass | Carter, MT | 85.4 miles | NW |
| Craig Pass | Harding, SD | 94.2 miles | NE |
| Riley Pass | Harding, SD | 94.3 miles | NE |
| Fuller Pass | Harding, SD | 96.5 miles | NE |
| Cottonwood Pass | Shannon, SD | 97.7 miles | SE |
| Sage Creek Pass | Pennington, SD | 103.6 miles | SE |
| Dillon Pass | Pennington, SD | 108.2 miles | SE |
| Camps Pass | Powder River, MT | 109.9 miles | NW |
| Suicide Pass | Powder River, MT | 110.4 miles | NW |
| Griffin Pass | Powder River, MT | 112 miles | NW |
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