| Formia to Berga | 609.63 mi (981.11 km) |
| Formia to Berja | 937.94 mi (1,509.47 km) |
| Formia to Bermeo | 846.33 mi (1,362.04 km) |
| Formia to Berriozar | 790.69 mi (1,272.50 km) |
| Formia to Betanzos | 1,121.31 mi (1,804.58 km) |
| Formia to Betera | 748.61 mi (1,204.77 km) |
| Formia to Bilbao | 855.42 mi (1,376.67 km) |
| Formia to Binefar | 688.97 mi (1,108.80 km) |
| Formia to Binisalem | 576.82 mi (928.31 km) |
| Formia to Blanes | 560.74 mi (902.43 km) |
| Formia to Boadilla del Monte | 914.74 mi (1,472.14 km) |
| Formia to Boiro | 1,157.41 mi (1,862.67 km) |
| Formia to Bolanos de Calatrava | 929.47 mi (1,495.84 km) |
| Formia to Bollullos de la Mitacion | 1,087.74 mi (1,750.54 km) |
| Formia to Bollullos par del Condado | 1,108.42 mi (1,783.83 km) |
