| Harpenden to Bois-Colombes | 231.24 mi (372.14 km) |
| Harpenden to Bois-d'Arcy | 233.41 mi (375.64 km) |
| Harpenden to Bois-Guillaume | 174.54 mi (280.89 km) |
| Harpenden to Boissy-Saint-Leger | 246.69 mi (397.01 km) |
| Harpenden to Bolbec | 159.28 mi (256.33 km) |
| Harpenden to Bollene | 571.25 mi (919.33 km) |
| Harpenden to Bondoufle | 252.17 mi (405.84 km) |
| Harpenden to Bondues | 167.73 mi (269.93 km) |
| Harpenden to Bondy | 237.00 mi (381.42 km) |
| Harpenden to Bonneuil-sur-Marne | 244.75 mi (393.89 km) |
| Harpenden to Bonneville | 500.66 mi (805.74 km) |
| Harpenden to Bordeaux | 482.21 mi (776.04 km) |
| Harpenden to Borgo | 786.27 mi (1,265.38 km) |
| Harpenden to Bouc-Bel-Air | 636.68 mi (1,024.63 km) |
| Harpenden to Boucau | 575.46 mi (926.11 km) |
