| Formia to Borgosatollo | 336.60 mi (541.71 km) |
| Formia to Borgosesia | 407.79 mi (656.27 km) |
| Formia to Boscoreale | 56.87 mi (91.53 km) |
| Formia to Boscotrecase | 55.48 mi (89.29 km) |
| Formia to Botticino Sera | 340.15 mi (547.41 km) |
| Formia to Bovalino Marina | 254.42 mi (409.45 km) |
| Formia to Boves | 373.31 mi (600.79 km) |
| Formia to Boville Ernica | 27.60 mi (44.42 km) |
| Formia to Bovisio Masciago | 374.76 mi (603.12 km) |
| Formia to Bovolone | 302.22 mi (486.38 km) |
| Formia to Bra | 375.64 mi (604.54 km) |
| Formia to Bracciano | 93.73 mi (150.84 km) |
| Formia to Brandizzo | 396.84 mi (638.65 km) |
| Formia to Breganze | 323.06 mi (519.92 km) |
| Formia to Brembate | 362.21 mi (582.91 km) |
