| Portsmouth to Plattsburgh (New York) | 3,251.95 mi (5,233.52 km) |
| Portsmouth to Pleasant Grove (Utah) | 4,877.89 mi (7,850.21 km) |
| Portsmouth to Pleasant Hill (California) | 5,339.91 mi (8,593.75 km) |
| Portsmouth to Pleasant Hill (Iowa) | 4,170.45 mi (6,711.69 km) |
| Portsmouth to Pleasant Prairie (Wisconsin) | 3,913.76 mi (6,298.58 km) |
| Portsmouth to Pleasant View (Utah) | 4,835.14 mi (7,781.40 km) |
| Portsmouth to Pleasanton (California) | 5,350.50 mi (8,610.80 km) |
| Portsmouth to Pleasanton (Texas) | 4,995.52 mi (8,039.52 km) |
| Portsmouth to Pleasantville (New Jersey) | 3,514.66 mi (5,656.30 km) |
| Portsmouth to Plover (Wisconsin) | 3,889.06 mi (6,258.84 km) |
| Portsmouth to Plum (Pennsylvania) | 3,681.72 mi (5,925.15 km) |
| Portsmouth to Plymouth (Indiana) | 3,906.15 mi (6,286.35 km) |
| Portsmouth to Plymouth (Minnesota) | 4,008.33 mi (6,450.78 km) |
| Portsmouth to Pocatello (Idaho) | 4,767.00 mi (7,671.74 km) |
| Portsmouth to Poinciana (Florida) | 4,333.73 mi (6,974.47 km) |
