| O'Neil Pass | Lawrence, SD | 40.3 miles | SE |
| Red Gate | Meade, SD | 58.6 miles | SE |
| White Gate | Meade, SD | 58.8 miles | SE |
| The Gap | Campbell, WY | 60.3 miles | SW |
| Custer Gap | Pennington, SD | 63.9 miles | SE |
| Jumpoff Divide | Harding, SD | 69 miles | NE |
| Trenk Pass | Carter, MT | 72.6 miles | NW |
| J B Pass | Harding, SD | 77.4 miles | NE |
| Summit Pass | Harding, SD | 78 miles | NE |
| Willard Gap | Harding, SD | 79.1 miles | NE |
| Black Gap | Pennington, SD | 79.7 miles | SE |
| Reva Gap | Harding, SD | 84.5 miles | NE |
| Craig Pass | Harding, SD | 91.2 miles | NE |
| Riley Pass | Harding, SD | 92 miles | NE |
| Camps Pass | Powder River, MT | 92.4 miles | NW |
| Suicide Pass | Powder River, MT | 92.9 miles | NW |
| Fuller Pass | Harding, SD | 94 miles | NE |
| Gobbler Pass | Custer, SD | 94.1 miles | SE |
| Griffin Pass | Powder River, MT | 94.7 miles | NW |
| Buffalo Gap | Custer, SD | 97.7 miles | SE |
| Cottonwood Pass | Shannon, SD | 115.2 miles | SE |
| Smoky Gap | Natrona, WY | 133.9 miles | SW |
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