| Comacchio to Bougival | 554.88 mi (892.99 km) |
| Comacchio to Bouguenais | 684.02 mi (1,100.83 km) |
| Comacchio to Boulogne-Billancourt | 549.83 mi (884.87 km) |
| Comacchio to Boulogne-sur-Mer | 642.94 mi (1,034.71 km) |
| Comacchio to Bourg-de-Peage | 349.97 mi (563.22 km) |
| Comacchio to Bourg-en-Bresse | 352.62 mi (567.49 km) |
| Comacchio to Bourg-la-Reine | 545.07 mi (877.20 km) |
| Comacchio to Bourg-les-Valence | 357.45 mi (575.26 km) |
| Comacchio to Bourges | 498.24 mi (801.83 km) |
| Comacchio to Bourgoin-Jallieu | 342.14 mi (550.63 km) |
| Comacchio to Bressuire | 627.60 mi (1,010.03 km) |
| Comacchio to Brest | 830.37 mi (1,336.35 km) |
| Comacchio to Bretigny-sur-Orge | 540.19 mi (869.35 km) |
| Comacchio to Breuillet | 544.34 mi (876.03 km) |
| Comacchio to Briancon | 272.31 mi (438.24 km) |
