| Fern Down to Bougival | 224.58 mi (361.43 km) |
| Fern Down to Bouguenais | 251.30 mi (404.43 km) |
| Fern Down to Boulogne-Billancourt | 229.48 mi (369.32 km) |
| Fern Down to Boulogne-sur-Mer | 153.68 mi (247.33 km) |
| Fern Down to Bourg-de-Peage | 511.98 mi (823.96 km) |
| Fern Down to Bourg-en-Bresse | 455.35 mi (732.82 km) |
| Fern Down to Bourg-la-Reine | 234.51 mi (377.41 km) |
| Fern Down to Bourg-les-Valence | 512.61 mi (824.96 km) |
| Fern Down to Bourges | 322.79 mi (519.48 km) |
| Fern Down to Bourgoin-Jallieu | 488.86 mi (786.75 km) |
| Fern Down to Bressuire | 281.70 mi (453.35 km) |
| Fern Down to Brest | 203.47 mi (327.45 km) |
| Fern Down to Bretigny-sur-Orge | 241.57 mi (388.77 km) |
| Fern Down to Breuillet | 239.01 mi (384.66 km) |
| Fern Down to Briancon | 568.12 mi (914.31 km) |
