| Portsmouth to Tulare (California) | 5,355.21 mi (8,618.38 km) |
| Portsmouth to Tullahoma (Tennessee) | 4,180.31 mi (6,727.56 km) |
| Portsmouth to Tulsa (Oklahoma) | 4,528.28 mi (7,287.57 km) |
| Portsmouth to Tumwater (Washington) | 4,847.76 mi (7,801.72 km) |
| Portsmouth to Tupelo (Mississippi) | 4,335.68 mi (6,977.61 km) |
| Portsmouth to Turlock (California) | 5,328.42 mi (8,575.27 km) |
| Portsmouth to Tuscaloosa (Alabama) | 4,336.89 mi (6,979.55 km) |
| Portsmouth to Tustin (California) | 5,445.41 mi (8,763.55 km) |
| Portsmouth to Twentynine Palms (California) | 5,363.88 mi (8,632.33 km) |
| Portsmouth to Twin Falls (Idaho) | 4,846.83 mi (7,800.22 km) |
| Portsmouth to Twin Rivers (New Jersey) | 3,476.16 mi (5,594.34 km) |
| Portsmouth to Twinsburg (Ohio) | 3,714.19 mi (5,977.41 km) |
| Portsmouth to Two Rivers (Wisconsin) | 3,828.92 mi (6,162.06 km) |
| Portsmouth to Tyler (Texas) | 4,696.46 mi (7,558.22 km) |
| Portsmouth to Tysons (Virginia) | 3,647.72 mi (5,870.44 km) |
