| Castlebar to Agen | 802.72 mi (1,291.86 km) |
| Castlebar to Aigues-Mortes | 937.13 mi (1,508.16 km) |
| Castlebar to Aire-sur-la-Lys | 541.66 mi (871.72 km) |
| Castlebar to Aix-en-Provence | 977.06 mi (1,572.42 km) |
| Castlebar to Aix-les-Bains | 879.79 mi (1,415.89 km) |
| Castlebar to Aizenay | 596.97 mi (960.72 km) |
| Castlebar to Ajaccio | 1,167.50 mi (1,878.91 km) |
| Castlebar to Albert | 573.73 mi (923.33 km) |
| Castlebar to Albertville | 896.68 mi (1,443.07 km) |
| Castlebar to Albi | 858.69 mi (1,381.92 km) |
| Castlebar to Alencon | 552.78 mi (889.62 km) |
| Castlebar to Ales | 902.67 mi (1,452.71 km) |
| Castlebar to Alfortville | 613.70 mi (987.66 km) |
| Castlebar to Allauch | 988.56 mi (1,590.93 km) |
| Castlebar to Allonnes | 578.34 mi (930.75 km) |
