| Porto to Bougival | 746.64 mi (1,201.61 km) |
| Porto to Bouguenais | 540.94 mi (870.56 km) |
| Porto to Boulogne-Billancourt | 748.76 mi (1,205.01 km) |
| Porto to Boulogne-sur-Mer | 822.12 mi (1,323.08 km) |
| Porto to Bourg-de-Peage | 738.74 mi (1,188.89 km) |
| Porto to Bourg-en-Bresse | 773.38 mi (1,244.64 km) |
| Porto to Bourg-la-Reine | 748.81 mi (1,205.09 km) |
| Porto to Bourg-les-Valence | 729.73 mi (1,174.39 km) |
| Porto to Bourges | 681.64 mi (1,096.99 km) |
| Porto to Bourgoin-Jallieu | 760.56 mi (1,224.00 km) |
| Porto to Bressuire | 562.73 mi (905.63 km) |
| Porto to Brest | 538.75 mi (867.03 km) |
| Porto to Bretigny-sur-Orge | 740.98 mi (1,192.49 km) |
| Porto to Breuillet | 734.26 mi (1,181.67 km) |
| Porto to Briancon | 811.16 mi (1,305.43 km) |
