| Castro Daire to Beyne-Heusay | 934.96 mi (1,504.68 km) |
| Castro Daire to Bierbeek | 916.34 mi (1,474.70 km) |
| Castro Daire to Bilzen | 941.96 mi (1,515.93 km) |
| Castro Daire to Binche | 876.64 mi (1,410.81 km) |
| Castro Daire to Bissegem | 868.24 mi (1,397.30 km) |
| Castro Daire to Blankenberge | 890.44 mi (1,433.03 km) |
| Castro Daire to Blegny | 939.98 mi (1,512.76 km) |
| Castro Daire to Bocholt | 958.14 mi (1,541.98 km) |
| Castro Daire to Boechout | 922.86 mi (1,485.20 km) |
| Castro Daire to Bonheiden | 918.69 mi (1,478.48 km) |
| Castro Daire to Boom | 916.03 mi (1,474.20 km) |
| Castro Daire to Boortmeerbeek | 917.29 mi (1,476.23 km) |
| Castro Daire to Borgerhout | 924.60 mi (1,488.00 km) |
| Castro Daire to Borgloon | 933.35 mi (1,502.08 km) |
| Castro Daire to Bornem | 912.80 mi (1,469.01 km) |
