| Portsmouth to Seymour (Tennessee) | 4,056.10 mi (6,527.67 km) |
| Portsmouth to Shady Hills (Florida) | 4,365.21 mi (7,025.12 km) |
| Portsmouth to Shafter (California) | 5,391.66 mi (8,677.04 km) |
| Portsmouth to Shaker Heights (Ohio) | 3,711.69 mi (5,973.39 km) |
| Portsmouth to Shakopee (Minnesota) | 4,020.35 mi (6,470.13 km) |
| Portsmouth to Sharon (Pennsylvania) | 3,680.06 mi (5,922.48 km) |
| Portsmouth to Sharonville (Ohio) | 3,924.36 mi (6,315.64 km) |
| Portsmouth to Shasta Lake (California) | 5,192.51 mi (8,356.53 km) |
| Portsmouth to Shawnee (Kansas) | 4,343.79 mi (6,990.66 km) |
| Portsmouth to Shawnee (Oklahoma) | 4,608.07 mi (7,415.97 km) |
| Portsmouth to Sheboygan (Wisconsin) | 3,853.13 mi (6,201.02 km) |
| Portsmouth to Shelby (North Carolina) | 3,991.86 mi (6,424.27 km) |
| Portsmouth to Shelbyville (Indiana) | 3,967.60 mi (6,385.24 km) |
| Portsmouth to Shelbyville (Kentucky) | 4,006.92 mi (6,448.51 km) |
| Portsmouth to Shelbyville (Tennessee) | 4,183.82 mi (6,733.21 km) |
