| Portet-sur-Garonne to Borgosesia | 369.75 mi (595.06 km) |
| Portet-sur-Garonne to Boscoreale | 695.62 mi (1,119.49 km) |
| Portet-sur-Garonne to Boscotrecase | 694.41 mi (1,117.54 km) |
| Portet-sur-Garonne to Botticino Sera | 456.19 mi (734.17 km) |
| Portet-sur-Garonne to Bovalino Marina | 854.59 mi (1,375.32 km) |
| Portet-sur-Garonne to Boves | 310.75 mi (500.11 km) |
| Portet-sur-Garonne to Boville Ernica | 626.41 mi (1,008.12 km) |
| Portet-sur-Garonne to Bovisio Masciago | 407.51 mi (655.83 km) |
| Portet-sur-Garonne to Bovolone | 494.58 mi (795.94 km) |
| Portet-sur-Garonne to Bra | 329.77 mi (530.72 km) |
| Portet-sur-Garonne to Bracciano | 554.61 mi (892.56 km) |
| Portet-sur-Garonne to Brandizzo | 337.61 mi (543.33 km) |
| Portet-sur-Garonne to Breganze | 521.51 mi (839.29 km) |
| Portet-sur-Garonne to Brembate | 425.62 mi (684.96 km) |
| Portet-sur-Garonne to Brescia | 455.68 mi (733.35 km) |
