| Castano Primo to Montana | 726.76 mi (1,169.60 km) |
| Castano Primo to Nova Zagora | 880.72 mi (1,417.38 km) |
| Castano Primo to Novi Iskar | 746.06 mi (1,200.66 km) |
| Castano Primo to Novi Pazar | 919.69 mi (1,480.09 km) |
| Castano Primo to Omurtag | 886.79 mi (1,427.14 km) |
| Castano Primo to Panagyurishte | 792.96 mi (1,276.14 km) |
| Castano Primo to Parvomay | 852.19 mi (1,371.47 km) |
| Castano Primo to Pavlikeni | 831.11 mi (1,337.55 km) |
| Castano Primo to Pazardzhik | 807.62 mi (1,299.75 km) |
| Castano Primo to Pernik | 735.78 mi (1,184.13 km) |
| Castano Primo to Peshtera | 810.42 mi (1,304.25 km) |
| Castano Primo to Petrich | 777.49 mi (1,251.24 km) |
| Castano Primo to Pleven | 794.07 mi (1,277.94 km) |
| Castano Primo to Plovdiv | 828.71 mi (1,333.68 km) |
| Castano Primo to Pomorie | 955.95 mi (1,538.45 km) |
