| Grefrath to Bitritto | 868.16 mi (1,397.17 km) |
| Grefrath to Bollate | 419.47 mi (675.07 km) |
| Grefrath to Bologna | 526.16 mi (846.77 km) |
| Grefrath to Bolzano | 404.23 mi (650.55 km) |
| Grefrath to Bomporto | 504.86 mi (812.49 km) |
| Grefrath to Bonate di Sopra | 417.46 mi (671.83 km) |
| Grefrath to Bondeno | 503.32 mi (810.02 km) |
| Grefrath to Bordighera | 525.49 mi (845.69 km) |
| Grefrath to Borgaro Torinese | 431.64 mi (694.65 km) |
| Grefrath to Borgo a Buggiano | 553.86 mi (891.35 km) |
| Grefrath to Borgo San Dalmazzo | 486.74 mi (783.33 km) |
| Grefrath to Borgo San Lorenzo | 561.41 mi (903.50 km) |
| Grefrath to Borgomanero | 401.35 mi (645.92 km) |
| Grefrath to Borgoricco | 477.40 mi (768.30 km) |
| Grefrath to Borgosatollo | 442.48 mi (712.10 km) |
