| Castanet-Tolosan to Borgosesia | 365.83 mi (588.75 km) |
| Castanet-Tolosan to Boscoreale | 691.01 mi (1,112.08 km) |
| Castanet-Tolosan to Boscotrecase | 689.80 mi (1,110.13 km) |
| Castanet-Tolosan to Botticino Sera | 452.04 mi (727.49 km) |
| Castanet-Tolosan to Bovalino Marina | 850.12 mi (1,368.14 km) |
| Castanet-Tolosan to Boves | 306.35 mi (493.02 km) |
| Castanet-Tolosan to Boville Ernica | 621.79 mi (1,000.67 km) |
| Castanet-Tolosan to Bovisio Masciago | 403.47 mi (649.32 km) |
| Castanet-Tolosan to Bovolone | 490.31 mi (789.08 km) |
| Castanet-Tolosan to Bra | 325.48 mi (523.81 km) |
| Castanet-Tolosan to Bracciano | 549.98 mi (885.11 km) |
| Castanet-Tolosan to Brandizzo | 333.51 mi (536.73 km) |
| Castanet-Tolosan to Breganze | 517.34 mi (832.58 km) |
| Castanet-Tolosan to Brembate | 421.53 mi (678.39 km) |
| Castanet-Tolosan to Brescia | 451.53 mi (726.67 km) |
