| Castlebar to Deville-les-Rouen | 536.51 mi (863.43 km) |
| Castlebar to Dieppe | 518.87 mi (835.04 km) |
| Castlebar to Digne-les-Bains | 971.66 mi (1,563.74 km) |
| Castlebar to Dijon | 771.51 mi (1,241.62 km) |
| Castlebar to Dinan | 487.49 mi (784.53 km) |
| Castlebar to Dinard | 477.50 mi (768.46 km) |
| Castlebar to Divonne-les-Bains | 855.45 mi (1,376.72 km) |
| Castlebar to Dole | 798.42 mi (1,284.93 km) |
| Castlebar to Dombasle-sur-Meurthe | 765.16 mi (1,231.41 km) |
| Castlebar to Domerat | 735.41 mi (1,183.53 km) |
| Castlebar to Domont | 600.66 mi (966.66 km) |
| Castlebar to Douai | 576.88 mi (928.40 km) |
| Castlebar to Douarnenez | 453.15 mi (729.27 km) |
| Castlebar to Douchy-les-Mines | 591.29 mi (951.59 km) |
| Castlebar to Dourdan | 611.61 mi (984.29 km) |
