| Gex to Bois-Colombes | 250.98 mi (403.91 km) |
| Gex to Bois-d'Arcy | 253.53 mi (408.01 km) |
| Gex to Bois-Guillaume | 314.99 mi (506.92 km) |
| Gex to Boissy-Saint-Leger | 235.06 mi (378.29 km) |
| Gex to Bolbec | 341.71 mi (549.94 km) |
| Gex to Bollene | 155.45 mi (250.17 km) |
| Gex to Bondoufle | 232.99 mi (374.97 km) |
| Gex to Bondues | 330.85 mi (532.45 km) |
| Gex to Bondy | 243.31 mi (391.57 km) |
| Gex to Bonneuil-sur-Marne | 236.93 mi (381.30 km) |
| Gex to Bonneville | 24.04 mi (38.69 km) |
| Gex to Bordeaux | 337.01 mi (542.37 km) |
| Gex to Borgo | 309.48 mi (498.06 km) |
| Gex to Bouc-Bel-Air | 201.39 mi (324.10 km) |
| Gex to Boucau | 416.75 mi (670.70 km) |
