| Castlebar to Cognac | 690.52 mi (1,111.28 km) |
| Castlebar to Cogolin | 1,025.71 mi (1,650.72 km) |
| Castlebar to Colmar | 824.49 mi (1,326.90 km) |
| Castlebar to Colombes | 602.48 mi (969.60 km) |
| Castlebar to Colomiers | 855.96 mi (1,377.54 km) |
| Castlebar to Combs-la-Ville | 624.41 mi (1,004.89 km) |
| Castlebar to Comines | 561.31 mi (903.34 km) |
| Castlebar to Compiegne | 602.62 mi (969.82 km) |
| Castlebar to Concarneau | 475.14 mi (764.67 km) |
| Castlebar to Conde-sur-l'Escaut | 593.96 mi (955.89 km) |
| Castlebar to Conflans-Sainte-Honorine | 593.77 mi (955.58 km) |
| Castlebar to Corbas | 846.96 mi (1,363.05 km) |
| Castlebar to Corbeil-Essonnes | 624.15 mi (1,004.47 km) |
| Castlebar to Cormeilles-en-Parisis | 598.51 mi (963.21 km) |
| Castlebar to Cosne sur Loire | 695.18 mi (1,118.79 km) |
