| Portici to Barberino di Mugello | 270.82 mi (435.84 km) |
| Portici to Barcellona-Pozzo di Gotto | 190.27 mi (306.21 km) |
| Portici to Bareggio | 419.38 mi (674.92 km) |
| Portici to Barga | 298.77 mi (480.82 km) |
| Portici to Bari | 133.43 mi (214.73 km) |
| Portici to Barletta | 106.84 mi (171.94 km) |
| Portici to Baronissi | 23.03 mi (37.07 km) |
| Portici to Barrafranca | 238.70 mi (384.15 km) |
| Portici to Bassano del Grappa | 366.03 mi (589.07 km) |
| Portici to Battipaglia | 36.44 mi (58.64 km) |
| Portici to Beinasco | 448.06 mi (721.09 km) |
| Portici to Bellinzago Novarese | 436.77 mi (702.91 km) |
| Portici to Belluno | 382.70 mi (615.89 km) |
| Portici to Belmonte Mezzagno | 198.07 mi (318.77 km) |
| Portici to Belpasso | 226.24 mi (364.10 km) |
