| AGS North District | 137.9 |
| Appalachia District | 88.4 |
| Atlanta North District | 144.2 |
| Blue Ridge Scenic Rail | 45.5 |
| Blue Ridge Subdivision | 142 |
| Bruceton Subdivision | 87.9 |
| Carthage Subdivision | 4.1 |
| Chattanooga Subdivision | 140 |
| Cohutta Subdivision | 13.8 |
| Counce Branch | 17.6 |
| Cow Creek Branch | 9.3 |
| Dresden Subdivision | 12.5 |
| Etowah Subdivision | 88.8 |
| Florence Subdivision | 78.7 |
| Fulton Subdivision | 119 |
| H Line | 1.2 |
| Henderson Subdivision | 145.2 |
| Henry Subdivision | 9.9 |
| K Line | 3.9 |
| KD Subdivision | 164.8 |
| Kenton Subdivision | 43.7 |
| Kingsport Subdivision | 133.6 |
| Knoxville District BL Line | 16.8 |
| Knoxville District Bristol Line | 125 |
| Knoxville District Coster Line | 2.5 |
| Knoxville District Jellico Line | 47 |
| Knoxville District K&A Line | 15.6 |
| Knoxville District Middlesboro Line | 63.5 |
| Knoxville District Oakdale Line | 56.6 |
| Knoxville District River Line | 95.1 |
| Knoxville District West End | 102.1 |
| Lebanon Subdivision | 63 |
| Lookout Lead | 2.5 |
| Mainline | 165.9 |
| Memphis (CN) Subdivision | 22.9 |
| Memphis (CSXT) Subdivision | 133.1 |
| Memphis (UP) Subdivision | 96.3 |
| Memphis District West End | 151.1 |
| Memphis Terminal | 6.3 |
| Nashville (CSXT) Subdivision | 32.3 |
| Nashville (NERR) Subdivision | 30.9 |
| Nashville Terminal | 49.2 |
| New River Subdivision | 14 |
| Old Hickory Subdivision | 7.3 |
| Paris Subdivision | 48.6 |
| Pulaski Subdivision | 37.4 |
| RFE Line | 12.2 |
| S&NA North Subdivision | 178.9 |
| Second District CNO&TP | 137.4 |
| Shelby Subdivision | 31.5 |
| Thayer South Subdivision | 167.7 |
| Third District CNO&TP | 84.3 |
| Vine Hill Subdivision | 3.2 |
| W&A Subdivision | 116.7 |
| West Tennessee Main | 121 |
| Wildwood Lead | 2.1 |
