| Longford to Bougival | 544.37 mi (876.07 km) |
| Longford to Bouguenais | 527.43 mi (848.82 km) |
| Longford to Boulogne-Billancourt | 549.18 mi (883.82 km) |
| Longford to Boulogne-sur-Mer | 448.66 mi (722.05 km) |
| Longford to Bourg-de-Peage | 830.93 mi (1,337.25 km) |
| Longford to Bourg-en-Bresse | 775.87 mi (1,248.64 km) |
| Longford to Bourg-la-Reine | 554.26 mi (891.99 km) |
| Longford to Bourg-les-Valence | 831.04 mi (1,337.43 km) |
| Longford to Bourges | 640.87 mi (1,031.38 km) |
| Longford to Bourgoin-Jallieu | 809.01 mi (1,301.97 km) |
| Longford to Bressuire | 574.34 mi (924.31 km) |
| Longford to Brest | 395.66 mi (636.76 km) |
| Longford to Bretigny-sur-Orge | 561.77 mi (904.09 km) |
| Longford to Breuillet | 559.42 mi (900.30 km) |
| Longford to Briancon | 888.58 mi (1,430.03 km) |
