| Gretna to Borgosatollo | 5,230.68 mi (8,417.97 km) |
| Gretna to Borgosesia | 5,138.49 mi (8,269.60 km) |
| Gretna to Boscoreale | 5,578.88 mi (8,978.35 km) |
| Gretna to Boscotrecase | 5,577.54 mi (8,976.19 km) |
| Gretna to Botticino Sera | 5,228.52 mi (8,414.49 km) |
| Gretna to Bovalino Marina | 5,751.62 mi (9,256.33 km) |
| Gretna to Boves | 5,150.70 mi (8,289.25 km) |
| Gretna to Boville Ernica | 5,501.98 mi (8,854.58 km) |
| Gretna to Bovisio Masciago | 5,179.55 mi (8,335.68 km) |
| Gretna to Bovolone | 5,276.23 mi (8,491.27 km) |
| Gretna to Bra | 5,152.37 mi (8,291.93 km) |
| Gretna to Bracciano | 5,429.32 mi (8,737.65 km) |
| Gretna to Brandizzo | 5,136.90 mi (8,267.05 km) |
| Gretna to Breganze | 5,279.49 mi (8,496.53 km) |
| Gretna to Brembate | 5,197.20 mi (8,364.08 km) |
