| Portsmouth to Pittsburg (Kansas) | 4,418.13 mi (7,110.29 km) |
| Portsmouth to Pittsburgh (Pennsylvania) | 3,693.68 mi (5,944.40 km) |
| Portsmouth to Pittsfield (Massachusetts) | 3,333.90 mi (5,365.39 km) |
| Portsmouth to Placentia (California) | 5,438.43 mi (8,752.31 km) |
| Portsmouth to Placerville (California) | 5,256.64 mi (8,459.74 km) |
| Portsmouth to Plainfield (Illinois) | 3,967.96 mi (6,385.81 km) |
| Portsmouth to Plainfield (Indiana) | 3,983.75 mi (6,411.23 km) |
| Portsmouth to Plainfield (New Jersey) | 3,458.04 mi (5,565.17 km) |
| Portsmouth to Plainview (New York) | 3,411.87 mi (5,490.87 km) |
| Portsmouth to Plainview (Texas) | 4,849.09 mi (7,803.86 km) |
| Portsmouth to Plano (Illinois) | 3,977.18 mi (6,400.66 km) |
| Portsmouth to Plano (Texas) | 4,716.23 mi (7,590.03 km) |
| Portsmouth to Plant City (Florida) | 4,366.28 mi (7,026.85 km) |
| Portsmouth to Plantation (Florida) | 4,380.17 mi (7,049.21 km) |
| Portsmouth to Platteville (Wisconsin) | 4,002.95 mi (6,442.13 km) |
