| Potters Bar to Bougival | 220.94 mi (355.58 km) |
| Potters Bar to Bouguenais | 318.93 mi (513.28 km) |
| Potters Bar to Boulogne-Billancourt | 224.88 mi (361.91 km) |
| Potters Bar to Boulogne-sur-Mer | 102.76 mi (165.38 km) |
| Potters Bar to Bourg-de-Peage | 518.77 mi (834.88 km) |
| Potters Bar to Bourg-en-Bresse | 451.72 mi (726.98 km) |
| Potters Bar to Bourg-la-Reine | 229.85 mi (369.91 km) |
| Potters Bar to Bourg-les-Valence | 521.20 mi (838.80 km) |
| Potters Bar to Bourges | 339.16 mi (545.83 km) |
| Potters Bar to Bourgoin-Jallieu | 489.98 mi (788.54 km) |
| Potters Bar to Bressuire | 335.94 mi (540.64 km) |
| Potters Bar to Brest | 297.82 mi (479.30 km) |
| Potters Bar to Bretigny-sur-Orge | 240.01 mi (386.26 km) |
| Potters Bar to Breuillet | 240.18 mi (386.53 km) |
| Potters Bar to Briancon | 564.35 mi (908.23 km) |
