| Castlebar to Brandenburg | 906.73 mi (1,459.23 km) |
| Castlebar to Brandis | 931.90 mi (1,499.75 km) |
| Castlebar to Braunfels | 781.43 mi (1,257.59 km) |
| Castlebar to Braunsbedra | 904.22 mi (1,455.21 km) |
| Castlebar to Braunschweig | 827.31 mi (1,331.42 km) |
| Castlebar to Breckerfeld | 724.71 mi (1,166.31 km) |
| Castlebar to Breisach am Rhein | 835.02 mi (1,343.83 km) |
| Castlebar to Bremen | 744.22 mi (1,197.71 km) |
| Castlebar to Bremerhaven | 729.74 mi (1,174.40 km) |
| Castlebar to Bremervorde | 752.78 mi (1,211.48 km) |
| Castlebar to Bretten | 840.91 mi (1,353.31 km) |
| Castlebar to Bretzfeld | 864.50 mi (1,391.27 km) |
| Castlebar to Brieselang | 922.80 mi (1,485.10 km) |
| Castlebar to Brilon | 766.19 mi (1,233.07 km) |
| Castlebar to Bruchhausen-Vilsen | 755.97 mi (1,216.61 km) |
