| Gravelines to Bitritto | 981.07 mi (1,578.88 km) |
| Gravelines to Bollate | 493.94 mi (794.92 km) |
| Gravelines to Bologna | 619.23 mi (996.56 km) |
| Gravelines to Bolzano | 521.79 mi (839.75 km) |
| Gravelines to Bomporto | 596.77 mi (960.41 km) |
| Gravelines to Bonate di Sopra | 500.52 mi (805.51 km) |
| Gravelines to Bondeno | 601.40 mi (967.85 km) |
| Gravelines to Bordighera | 560.72 mi (902.39 km) |
| Gravelines to Borgaro Torinese | 476.80 mi (767.33 km) |
| Gravelines to Borgo a Buggiano | 633.66 mi (1,019.77 km) |
| Gravelines to Borgo San Dalmazzo | 522.57 mi (841.00 km) |
| Gravelines to Borgo San Lorenzo | 649.58 mi (1,045.40 km) |
| Gravelines to Borgomanero | 466.72 mi (751.11 km) |
| Gravelines to Borgoricco | 588.82 mi (947.61 km) |
| Gravelines to Borgosatollo | 532.65 mi (857.22 km) |
