| Grefrath to Barcellona-Pozzo di Gotto | 1,008.12 mi (1,622.41 km) |
| Grefrath to Bareggio | 423.20 mi (681.08 km) |
| Grefrath to Barga | 537.16 mi (864.48 km) |
| Grefrath to Bari | 864.65 mi (1,391.51 km) |
| Grefrath to Barletta | 837.58 mi (1,347.95 km) |
| Grefrath to Baronissi | 834.70 mi (1,343.32 km) |
| Grefrath to Barrafranca | 1,038.93 mi (1,672.00 km) |
| Grefrath to Bassano del Grappa | 456.81 mi (735.17 km) |
| Grefrath to Battipaglia | 847.64 mi (1,364.14 km) |
| Grefrath to Beinasco | 440.36 mi (708.69 km) |
| Grefrath to Bellinzago Novarese | 411.08 mi (661.57 km) |
| Grefrath to Belluno | 447.55 mi (720.26 km) |
| Grefrath to Belmonte Mezzagno | 979.88 mi (1,576.97 km) |
| Grefrath to Belpasso | 1,039.73 mi (1,673.28 km) |
| Grefrath to Belvedere Marittimo | 930.26 mi (1,497.11 km) |
