| Portsmouth to Lima (Ohio) | 3,846.47 mi (6,190.30 km) |
| Portsmouth to Lincoln (California) | 5,263.33 mi (8,470.51 km) |
| Portsmouth to Lincoln (Illinois) | 4,080.45 mi (6,566.84 km) |
| Portsmouth to Lincoln (Nebraska) | 4,326.55 mi (6,962.91 km) |
| Portsmouth to Lincoln Park (Michigan) | 3,742.83 mi (6,023.51 km) |
| Portsmouth to Lincoln Park (New Jersey) | 3,440.35 mi (5,536.71 km) |
| Portsmouth to Lincolnia (Virginia) | 3,649.36 mi (5,873.08 km) |
| Portsmouth to Lincolnton (North Carolina) | 3,970.52 mi (6,389.93 km) |
| Portsmouth to Lincolnwood (Illinois) | 3,931.37 mi (6,326.92 km) |
| Portsmouth to Linda (California) | 5,256.72 mi (8,459.88 km) |
| Portsmouth to Linden (New Jersey) | 3,450.27 mi (5,552.68 km) |
| Portsmouth to Lindenhurst (Illinois) | 3,923.94 mi (6,314.97 km) |
| Portsmouth to Lindenhurst (New York) | 3,411.72 mi (5,490.63 km) |
| Portsmouth to Lindenwold (New Jersey) | 3,515.93 mi (5,658.34 km) |
| Portsmouth to Lindon (Utah) | 4,878.77 mi (7,851.63 km) |
