| Castel Gandolfo to Bolsward | 849.00 mi (1,366.33 km) |
| Castel Gandolfo to Borger | 818.85 mi (1,317.81 km) |
| Castel Gandolfo to Borne | 779.69 mi (1,254.79 km) |
| Castel Gandolfo to Boskoop | 805.76 mi (1,296.74 km) |
| Castel Gandolfo to Boxmeer | 753.58 mi (1,212.76 km) |
| Castel Gandolfo to Boxtel | 762.19 mi (1,226.63 km) |
| Castel Gandolfo to Breda | 774.76 mi (1,246.86 km) |
| Castel Gandolfo to Breukelen | 804.52 mi (1,294.76 km) |
| Castel Gandolfo to Brielle | 806.86 mi (1,298.52 km) |
| Castel Gandolfo to Bronkhorst | 775.94 mi (1,248.75 km) |
| Castel Gandolfo to Brummen | 776.55 mi (1,249.73 km) |
| Castel Gandolfo to Brunssum | 710.63 mi (1,143.64 km) |
| Castel Gandolfo to Bunnik | 792.39 mi (1,275.22 km) |
| Castel Gandolfo to Burgum | 849.23 mi (1,366.70 km) |
| Castel Gandolfo to Bussum | 807.87 mi (1,300.14 km) |
