| Opmeer to Cervello | 793.43 mi (1,276.90 km) |
| Opmeer to Cervera | 781.46 mi (1,257.63 km) |
| Opmeer to Ceuti | 1,053.39 mi (1,695.26 km) |
| Opmeer to Cheste | 951.76 mi (1,531.71 km) |
| Opmeer to Chiclana de la Frontera | 1,247.42 mi (2,007.52 km) |
| Opmeer to Chipiona | 1,233.24 mi (1,984.70 km) |
| Opmeer to Chiva | 952.79 mi (1,533.37 km) |
| Opmeer to Churriana de la Vega | 1,151.88 mi (1,853.77 km) |
| Opmeer to Ciempozuelos | 956.17 mi (1,538.80 km) |
| Opmeer to Cieza | 1,044.70 mi (1,681.28 km) |
| Opmeer to Cisterniga | 887.76 mi (1,428.72 km) |
| Opmeer to Ciudad de Melilla | 1,264.01 mi (2,034.22 km) |
| Opmeer to Ciudad Real | 1,037.55 mi (1,669.77 km) |
| Opmeer to Ciudad-Rodrigo | 995.44 mi (1,602.01 km) |
| Opmeer to Cocentaina | 997.93 mi (1,606.02 km) |
