| Portsmouth to Montana | 1,244.78 mi (2,003.28 km) |
| Portsmouth to Nova Zagora | 1,397.63 mi (2,249.27 km) |
| Portsmouth to Novi Iskar | 1,273.33 mi (2,049.23 km) |
| Portsmouth to Novi Pazar | 1,416.45 mi (2,279.56 km) |
| Portsmouth to Omurtag | 1,391.96 mi (2,240.14 km) |
| Portsmouth to Panagyurishte | 1,319.99 mi (2,124.32 km) |
| Portsmouth to Parvomay | 1,379.14 mi (2,219.52 km) |
| Portsmouth to Pavlikeni | 1,339.97 mi (2,156.47 km) |
| Portsmouth to Pazardzhik | 1,338.11 mi (2,153.48 km) |
| Portsmouth to Pernik | 1,267.92 mi (2,040.53 km) |
| Portsmouth to Peshtera | 1,343.37 mi (2,161.95 km) |
| Portsmouth to Petrich | 1,324.36 mi (2,131.35 km) |
| Portsmouth to Pleven | 1,304.05 mi (2,098.66 km) |
| Portsmouth to Plovdiv | 1,357.56 mi (2,184.78 km) |
| Portsmouth to Pomorie | 1,462.96 mi (2,354.41 km) |
