| Portsmouth to Ukiah (California) | 5,305.11 mi (8,537.76 km) |
| Portsmouth to Union (Missouri) | 4,224.53 mi (6,798.73 km) |
| Portsmouth to Union City (California) | 5,358.31 mi (8,623.36 km) |
| Portsmouth to Union City (Georgia) | 4,197.38 mi (6,755.03 km) |
| Portsmouth to Union City (New Jersey) | 3,435.72 mi (5,529.26 km) |
| Portsmouth to Union City (Tennessee) | 4,244.12 mi (6,830.26 km) |
| Portsmouth to Union Hill-Novelty Hill (Washington) | 4,784.84 mi (7,700.45 km) |
| Portsmouth to Union Park (Florida) | 4,301.36 mi (6,922.37 km) |
| Portsmouth to Uniondale (New York) | 3,419.67 mi (5,503.43 km) |
| Portsmouth to Universal City (Texas) | 4,957.49 mi (7,978.31 km) |
| Portsmouth to University (Florida) | 4,376.53 mi (7,043.34 km) |
| Portsmouth to University City (Missouri) | 4,187.92 mi (6,739.80 km) |
| Portsmouth to University Heights (Ohio) | 3,710.21 mi (5,971.01 km) |
| Portsmouth to University of California-Santa Barbara (California) | 5,473.29 mi (8,808.40 km) |
| Portsmouth to University Park (Texas) | 4,728.15 mi (7,609.22 km) |
