| Castelo Branco to Blace | 1,499.90 mi (2,413.85 km) |
| Castelo Branco to Bogatic | 1,414.15 mi (2,275.85 km) |
| Castelo Branco to Bojnik | 1,522.13 mi (2,449.63 km) |
| Castelo Branco to Boljevac | 1,533.14 mi (2,467.35 km) |
| Castelo Branco to Bor | 1,540.86 mi (2,479.78 km) |
| Castelo Branco to Borca | 1,461.56 mi (2,352.15 km) |
| Castelo Branco to Bosilegrad | 1,561.94 mi (2,513.70 km) |
| Castelo Branco to Brus | 1,487.22 mi (2,393.45 km) |
| Castelo Branco to Bujanovac | 1,526.15 mi (2,456.10 km) |
| Castelo Branco to Cacak | 1,453.39 mi (2,339.01 km) |
| Castelo Branco to Cajetina | 1,421.59 mi (2,287.82 km) |
| Castelo Branco to Cicevac | 1,508.07 mi (2,427.00 km) |
| Castelo Branco to Coka | 1,454.05 mi (2,340.07 km) |
| Castelo Branco to Crna Trava | 1,552.02 mi (2,497.74 km) |
| Castelo Branco to Crvenka | 1,418.55 mi (2,282.94 km) |
