| Boulogne-sur-Mer to Barcellona-Pozzo di Gotto | 1,094.20 mi (1,760.94 km) |
| Boulogne-sur-Mer to Bareggio | 497.21 mi (800.18 km) |
| Boulogne-sur-Mer to Barga | 618.14 mi (994.80 km) |
| Boulogne-sur-Mer to Bari | 985.11 mi (1,585.39 km) |
| Boulogne-sur-Mer to Barletta | 954.92 mi (1,536.79 km) |
| Boulogne-sur-Mer to Baronissi | 934.27 mi (1,503.56 km) |
| Boulogne-sur-Mer to Barrafranca | 1,111.39 mi (1,788.60 km) |
| Boulogne-sur-Mer to Bassano del Grappa | 577.29 mi (929.06 km) |
| Boulogne-sur-Mer to Battipaglia | 948.19 mi (1,525.96 km) |
| Boulogne-sur-Mer to Beinasco | 481.48 mi (774.87 km) |
| Boulogne-sur-Mer to Bellinzago Novarese | 480.14 mi (772.70 km) |
| Boulogne-sur-Mer to Belluno | 579.35 mi (932.37 km) |
| Boulogne-sur-Mer to Belmonte Mezzagno | 1,048.25 mi (1,687.00 km) |
| Boulogne-sur-Mer to Belpasso | 1,120.47 mi (1,803.23 km) |
| Boulogne-sur-Mer to Belvedere Marittimo | 1,031.40 mi (1,659.88 km) |
