| Castlebar to Montana | 1,631.99 mi (2,626.43 km) |
| Castlebar to Nova Zagora | 1,782.22 mi (2,868.21 km) |
| Castlebar to Novi Iskar | 1,663.04 mi (2,676.40 km) |
| Castlebar to Novi Pazar | 1,793.57 mi (2,886.47 km) |
| Castlebar to Omurtag | 1,772.50 mi (2,852.57 km) |
| Castlebar to Panagyurishte | 1,709.02 mi (2,750.40 km) |
| Castlebar to Parvomay | 1,767.43 mi (2,844.40 km) |
| Castlebar to Pavlikeni | 1,722.64 mi (2,772.32 km) |
| Castlebar to Pazardzhik | 1,728.05 mi (2,781.03 km) |
| Castlebar to Pernik | 1,659.22 mi (2,670.26 km) |
| Castlebar to Peshtera | 1,734.07 mi (2,790.72 km) |
| Castlebar to Petrich | 1,719.73 mi (2,767.64 km) |
| Castlebar to Pleven | 1,687.69 mi (2,716.07 km) |
| Castlebar to Plovdiv | 1,746.74 mi (2,811.10 km) |
| Castlebar to Pomorie | 1,843.07 mi (2,966.14 km) |
