| Portland to Bougival | 5,117.05 mi (8,235.09 km) |
| Portland to Bouguenais | 5,102.95 mi (8,212.40 km) |
| Portland to Boulogne-Billancourt | 5,121.45 mi (8,242.18 km) |
| Portland to Boulogne-sur-Mer | 5,000.32 mi (8,047.24 km) |
| Portland to Bourg-de-Peage | 5,411.92 mi (8,709.64 km) |
| Portland to Bourg-en-Bresse | 5,350.30 mi (8,610.48 km) |
| Portland to Bourg-la-Reine | 5,126.55 mi (8,250.39 km) |
| Portland to Bourg-les-Valence | 5,412.78 mi (8,711.03 km) |
| Portland to Bourges | 5,222.99 mi (8,405.59 km) |
| Portland to Bourgoin-Jallieu | 5,386.82 mi (8,669.24 km) |
| Portland to Bressuire | 5,154.33 mi (8,295.09 km) |
| Portland to Brest | 4,953.50 mi (7,971.89 km) |
| Portland to Bretigny-sur-Orge | 5,135.63 mi (8,265.00 km) |
| Portland to Breuillet | 5,134.47 mi (8,263.14 km) |
| Portland to Briancon | 5,463.37 mi (8,792.45 km) |
