| Opmeer to Castrovillari | 1,037.06 mi (1,668.99 km) |
| Opmeer to Catania | 1,158.20 mi (1,863.94 km) |
| Opmeer to Catanzaro | 1,103.23 mi (1,775.48 km) |
| Opmeer to Cattolica | 700.45 mi (1,127.26 km) |
| Opmeer to Cava de' Tirreni | 947.20 mi (1,524.38 km) |
| Opmeer to Cavallino | 1,058.97 mi (1,704.25 km) |
| Opmeer to Cavarzere | 614.07 mi (988.25 km) |
| Opmeer to Cave | 838.79 mi (1,349.90 km) |
| Opmeer to Cavriago | 608.12 mi (978.67 km) |
| Opmeer to Cavriglia | 701.76 mi (1,129.38 km) |
| Opmeer to Cazzago San Martino | 542.38 mi (872.87 km) |
| Opmeer to Ceccano | 862.93 mi (1,388.76 km) |
| Opmeer to Cecina | 697.00 mi (1,121.72 km) |
| Opmeer to Cefalu | 1,102.77 mi (1,774.73 km) |
| Opmeer to Ceglie Messapico | 1,020.14 mi (1,641.76 km) |
