| Castlebar to Aulnay-sous-Bois | 610.30 mi (982.18 km) |
| Castlebar to Aulnoye-Aymeries | 611.59 mi (984.26 km) |
| Castlebar to Auray | 508.76 mi (818.77 km) |
| Castlebar to Aurillac | 810.16 mi (1,303.83 km) |
| Castlebar to Auriol | 991.34 mi (1,595.41 km) |
| Castlebar to Auterive | 875.18 mi (1,408.46 km) |
| Castlebar to Autun | 763.62 mi (1,228.93 km) |
| Castlebar to Auxerre | 698.78 mi (1,124.57 km) |
| Castlebar to Avignon | 934.39 mi (1,503.76 km) |
| Castlebar to Avion | 566.10 mi (911.05 km) |
| Castlebar to Avon | 641.78 mi (1,032.85 km) |
| Castlebar to Avranches | 495.18 mi (796.91 km) |
| Castlebar to Avrille | 580.63 mi (934.44 km) |
| Castlebar to Aytre | 644.94 mi (1,037.94 km) |
| Castlebar to Bagneux | 610.11 mi (981.88 km) |
