| Castalla to Montana | 1,284.48 mi (2,067.16 km) |
| Castalla to Nova Zagora | 1,420.53 mi (2,286.13 km) |
| Castalla to Novi Iskar | 1,286.63 mi (2,070.63 km) |
| Castalla to Novi Pazar | 1,483.13 mi (2,386.87 km) |
| Castalla to Omurtag | 1,442.80 mi (2,321.97 km) |
| Castalla to Panagyurishte | 1,327.38 mi (2,136.21 km) |
| Castalla to Parvomay | 1,378.99 mi (2,219.28 km) |
| Castalla to Pavlikeni | 1,388.40 mi (2,234.41 km) |
| Castalla to Pazardzhik | 1,334.00 mi (2,146.86 km) |
| Castalla to Pernik | 1,269.46 mi (2,043.00 km) |
| Castalla to Peshtera | 1,331.86 mi (2,143.42 km) |
| Castalla to Petrich | 1,274.43 mi (2,051.00 km) |
| Castalla to Pleven | 1,354.27 mi (2,179.49 km) |
| Castalla to Plovdiv | 1,355.19 mi (2,180.97 km) |
| Castalla to Pomorie | 1,502.22 mi (2,417.60 km) |
