| Harpenden to Aulnay-sous-Bois | 235.03 mi (378.24 km) |
| Harpenden to Aulnoye-Aymeries | 213.40 mi (343.44 km) |
| Harpenden to Auray | 309.78 mi (498.54 km) |
| Harpenden to Aurillac | 493.01 mi (793.42 km) |
| Harpenden to Auriol | 646.35 mi (1,040.20 km) |
| Harpenden to Auterive | 591.14 mi (951.35 km) |
| Harpenden to Autun | 395.81 mi (637.00 km) |
| Harpenden to Auxerre | 327.99 mi (527.85 km) |
| Harpenden to Avignon | 593.48 mi (955.11 km) |
| Harpenden to Avion | 168.94 mi (271.88 km) |
| Harpenden to Avon | 272.08 mi (437.87 km) |
| Harpenden to Avranches | 220.97 mi (355.62 km) |
| Harpenden to Avrille | 298.02 mi (479.62 km) |
| Harpenden to Aytre | 394.19 mi (634.39 km) |
| Harpenden to Bagneux | 239.46 mi (385.37 km) |
