| Castlebar to Cabestany | 952.99 mi (1,533.69 km) |
| Castlebar to Cabries | 979.69 mi (1,576.67 km) |
| Castlebar to Cachan | 611.03 mi (983.36 km) |
| Castlebar to Caen | 501.30 mi (806.76 km) |
| Castlebar to Cagnes-sur-Mer | 1,023.74 mi (1,647.55 km) |
| Castlebar to Cahors | 809.62 mi (1,302.95 km) |
| Castlebar to Calais | 510.77 mi (822.00 km) |
| Castlebar to Caluire-et-Cuire | 838.74 mi (1,349.82 km) |
| Castlebar to Cambrai | 589.55 mi (948.78 km) |
| Castlebar to Canet-en-Roussillon | 953.24 mi (1,534.09 km) |
| Castlebar to Cannes | 1,025.25 mi (1,649.98 km) |
| Castlebar to Canteleu | 536.83 mi (863.95 km) |
| Castlebar to Capbreton | 790.67 mi (1,272.46 km) |
| Castlebar to Carcassonne | 906.12 mi (1,458.26 km) |
| Castlebar to Carmaux | 852.04 mi (1,371.23 km) |
