| Frederick to Montana | 4,874.77 mi (7,845.19 km) |
| Frederick to Nova Zagora | 5,025.51 mi (8,087.77 km) |
| Frederick to Novi Iskar | 4,904.95 mi (7,893.75 km) |
| Frederick to Novi Pazar | 5,035.75 mi (8,104.25 km) |
| Frederick to Omurtag | 5,015.57 mi (8,071.77 km) |
| Frederick to Panagyurishte | 4,951.26 mi (7,968.28 km) |
| Frederick to Parvomay | 5,009.98 mi (8,062.79 km) |
| Frederick to Pavlikeni | 4,965.94 mi (7,991.91 km) |
| Frederick to Pazardzhik | 4,969.90 mi (7,998.28 km) |
| Frederick to Pernik | 4,900.27 mi (7,886.21 km) |
| Frederick to Peshtera | 4,975.52 mi (8,007.33 km) |
| Frederick to Petrich | 4,957.18 mi (7,977.82 km) |
| Frederick to Pleven | 4,931.00 mi (7,935.68 km) |
| Frederick to Plovdiv | 4,988.94 mi (8,028.93 km) |
| Frederick to Pomorie | 5,085.99 mi (8,185.11 km) |
