| Castanet-Tolosan to Beyne-Heusay | 527.90 mi (849.58 km) |
| Castanet-Tolosan to Bierbeek | 528.26 mi (850.15 km) |
| Castanet-Tolosan to Bilzen | 541.62 mi (871.65 km) |
| Castanet-Tolosan to Binche | 491.94 mi (791.71 km) |
| Castanet-Tolosan to Bissegem | 510.84 mi (822.11 km) |
| Castanet-Tolosan to Blankenberge | 543.11 mi (874.05 km) |
| Castanet-Tolosan to Blegny | 532.52 mi (857.01 km) |
| Castanet-Tolosan to Bocholt | 562.24 mi (904.84 km) |
| Castanet-Tolosan to Boechout | 545.57 mi (878.01 km) |
| Castanet-Tolosan to Bonheiden | 538.43 mi (866.53 km) |
| Castanet-Tolosan to Boom | 539.77 mi (868.67 km) |
| Castanet-Tolosan to Boortmeerbeek | 535.54 mi (861.87 km) |
| Castanet-Tolosan to Borgerhout | 549.17 mi (883.81 km) |
| Castanet-Tolosan to Borgloon | 534.69 mi (860.51 km) |
| Castanet-Tolosan to Bornem | 539.37 mi (868.03 km) |
