| Potomac to Montana | 4,884.80 mi (7,861.33 km) |
| Potomac to Nova Zagora | 5,035.81 mi (8,104.35 km) |
| Potomac to Novi Iskar | 4,914.74 mi (7,909.51 km) |
| Potomac to Novi Pazar | 5,046.70 mi (8,121.88 km) |
| Potomac to Omurtag | 5,026.23 mi (8,088.93 km) |
| Potomac to Panagyurishte | 4,961.12 mi (7,984.15 km) |
| Potomac to Parvomay | 5,019.92 mi (8,078.79 km) |
| Potomac to Pavlikeni | 4,976.40 mi (8,008.74 km) |
| Potomac to Pazardzhik | 4,979.66 mi (8,014.00 km) |
| Potomac to Pernik | 4,909.89 mi (7,901.71 km) |
| Potomac to Peshtera | 4,985.21 mi (8,022.92 km) |
| Potomac to Petrich | 4,966.32 mi (7,992.52 km) |
| Potomac to Pleven | 4,941.36 mi (7,952.35 km) |
| Potomac to Plovdiv | 4,998.79 mi (8,044.77 km) |
| Potomac to Pomorie | 5,096.72 mi (8,202.38 km) |
