| Rockville to Bougival | 3,818.91 mi (6,145.94 km) |
| Rockville to Bouguenais | 3,699.47 mi (5,953.73 km) |
| Rockville to Boulogne-Billancourt | 3,823.96 mi (6,154.06 km) |
| Rockville to Boulogne-sur-Mer | 3,750.77 mi (6,036.28 km) |
| Rockville to Bourg-de-Peage | 4,051.31 mi (6,519.96 km) |
| Rockville to Bourg-en-Bresse | 4,024.41 mi (6,476.66 km) |
| Rockville to Bourg-la-Reine | 3,828.53 mi (6,161.42 km) |
| Rockville to Bourg-les-Valence | 4,047.22 mi (6,513.36 km) |
| Rockville to Bourges | 3,876.98 mi (6,239.40 km) |
| Rockville to Bourgoin-Jallieu | 4,044.70 mi (6,509.32 km) |
| Rockville to Bressuire | 3,757.67 mi (6,047.38 km) |
| Rockville to Brest | 3,545.92 mi (5,706.61 km) |
| Rockville to Bretigny-sur-Orge | 3,832.50 mi (6,167.82 km) |
| Rockville to Breuillet | 3,827.99 mi (6,160.55 km) |
| Rockville to Briancon | 4,125.17 mi (6,638.81 km) |
