| Castricum to Bitonto | 970.21 mi (1,561.41 km) |
| Castricum to Bitritto | 978.22 mi (1,574.30 km) |
| Castricum to Bollate | 523.70 mi (842.82 km) |
| Castricum to Bologna | 634.32 mi (1,020.84 km) |
| Castricum to Bolzano | 514.14 mi (827.42 km) |
| Castricum to Bomporto | 612.77 mi (986.16 km) |
| Castricum to Bonate di Sopra | 523.34 mi (842.24 km) |
| Castricum to Bondeno | 611.99 mi (984.90 km) |
| Castricum to Bordighera | 621.15 mi (999.65 km) |
| Castricum to Borgaro Torinese | 528.85 mi (851.11 km) |
| Castricum to Borgo a Buggiano | 660.17 mi (1,062.45 km) |
| Castricum to Borgo San Dalmazzo | 582.09 mi (936.79 km) |
| Castricum to Borgo San Lorenzo | 669.07 mi (1,076.76 km) |
| Castricum to Borgomanero | 503.33 mi (810.03 km) |
| Castricum to Borgoricco | 587.14 mi (944.91 km) |
