| Portsmouth to Pottsville (Pennsylvania) | 3,529.32 mi (5,679.89 km) |
| Portsmouth to Poughkeepsie (New York) | 3,392.28 mi (5,459.35 km) |
| Portsmouth to Poulsbo (Washington) | 4,797.72 mi (7,721.19 km) |
| Portsmouth to Poway (California) | 5,461.06 mi (8,788.73 km) |
| Portsmouth to Powder Springs (Georgia) | 4,189.36 mi (6,742.13 km) |
| Portsmouth to Powell (Ohio) | 3,831.07 mi (6,165.51 km) |
| Portsmouth to Powell (Tennessee) | 4,059.48 mi (6,533.11 km) |
| Portsmouth to Prairie Ridge (Washington) | 4,818.03 mi (7,753.87 km) |
| Portsmouth to Prairie Village (Kansas) | 4,338.65 mi (6,982.39 km) |
| Portsmouth to Prairieville (Louisiana) | 4,621.95 mi (7,438.31 km) |
| Portsmouth to Prattville (Alabama) | 4,330.62 mi (6,969.46 km) |
| Portsmouth to Preakness (New Jersey) | 3,436.47 mi (5,530.46 km) |
| Portsmouth to Prescott (Arizona) | 5,216.40 mi (8,394.98 km) |
| Portsmouth to Prescott Valley (Arizona) | 5,211.22 mi (8,386.65 km) |
| Portsmouth to Prichard (Alabama) | 4,482.66 mi (7,214.15 km) |
