| Gaithersburg to Bois-Colombes | 3,823.23 mi (6,152.90 km) |
| Gaithersburg to Bois-d'Arcy | 3,816.26 mi (6,141.67 km) |
| Gaithersburg to Bois-Guillaume | 3,760.98 mi (6,052.72 km) |
| Gaithersburg to Boissy-Saint-Leger | 3,837.75 mi (6,176.27 km) |
| Gaithersburg to Bolbec | 3,731.35 mi (6,005.02 km) |
| Gaithersburg to Bollene | 4,061.44 mi (6,536.25 km) |
| Gaithersburg to Bondoufle | 3,835.89 mi (6,173.26 km) |
| Gaithersburg to Bondues | 3,811.91 mi (6,134.67 km) |
| Gaithersburg to Bondy | 3,832.66 mi (6,168.07 km) |
| Gaithersburg to Bonneuil-sur-Marne | 3,836.19 mi (6,173.76 km) |
| Gaithersburg to Bonneville | 4,079.19 mi (6,564.82 km) |
| Gaithersburg to Bordeaux | 3,806.82 mi (6,126.48 km) |
| Gaithersburg to Borgo | 4,324.73 mi (6,959.97 km) |
| Gaithersburg to Bouc-Bel-Air | 4,116.56 mi (6,624.96 km) |
| Gaithersburg to Boucau | 3,801.43 mi (6,117.81 km) |
