| Castelo Branco to Montana | 1,597.03 mi (2,570.17 km) |
| Castelo Branco to Nova Zagora | 1,741.88 mi (2,803.29 km) |
| Castelo Branco to Novi Iskar | 1,605.27 mi (2,583.43 km) |
| Castelo Branco to Novi Pazar | 1,796.74 mi (2,891.57 km) |
| Castelo Branco to Omurtag | 1,758.70 mi (2,830.36 km) |
| Castelo Branco to Panagyurishte | 1,648.88 mi (2,653.62 km) |
| Castelo Branco to Parvomay | 1,703.92 mi (2,742.19 km) |
| Castelo Branco to Pavlikeni | 1,702.98 mi (2,740.68 km) |
| Castelo Branco to Pazardzhik | 1,658.21 mi (2,668.64 km) |
| Castelo Branco to Pernik | 1,590.01 mi (2,558.88 km) |
| Castelo Branco to Peshtera | 1,657.57 mi (2,667.60 km) |
| Castelo Branco to Petrich | 1,606.01 mi (2,584.62 km) |
| Castelo Branco to Pleven | 1,667.18 mi (2,683.07 km) |
| Castelo Branco to Plovdiv | 1,679.78 mi (2,703.34 km) |
| Castelo Branco to Pomorie | 1,822.54 mi (2,933.09 km) |
