| Portsmouth to Shoreview (Minnesota) | 3,993.63 mi (6,427.13 km) |
| Portsmouth to Shorewood (Illinois) | 3,972.30 mi (6,392.79 km) |
| Portsmouth to Shorewood (Wisconsin) | 3,888.14 mi (6,257.36 km) |
| Portsmouth to Short Hills (New Jersey) | 3,449.17 mi (5,550.90 km) |
| Portsmouth to Short Pump (Virginia) | 3,720.32 mi (5,987.28 km) |
| Portsmouth to Show Low (Arizona) | 5,149.42 mi (8,287.19 km) |
| Portsmouth to Shreveport (Louisiana) | 4,628.86 mi (7,449.43 km) |
| Portsmouth to Sicklerville (New Jersey) | 3,519.18 mi (5,663.57 km) |
| Portsmouth to Sidney (Ohio) | 3,869.01 mi (6,226.57 km) |
| Portsmouth to Sierra Madre (California) | 5,428.58 mi (8,736.45 km) |
| Portsmouth to Sierra Vista (Arizona) | 5,306.43 mi (8,539.87 km) |
| Portsmouth to Sierra Vista Southeast (Arizona) | 5,308.88 mi (8,543.81 km) |
| Portsmouth to Signal Hill (California) | 5,453.14 mi (8,775.98 km) |
| Portsmouth to Sikeston (Missouri) | 4,243.65 mi (6,829.49 km) |
| Portsmouth to Siloam Springs (Arkansas) | 4,472.30 mi (7,197.46 km) |
