| Opmeer to Chitila | 1,109.15 mi (1,785.00 km) |
| Opmeer to Cisnadie | 987.72 mi (1,589.59 km) |
| Opmeer to Cluj-Napoca | 923.98 mi (1,487.00 km) |
| Opmeer to Codlea | 1,039.06 mi (1,672.21 km) |
| Opmeer to Comanesti | 1,051.15 mi (1,691.66 km) |
| Opmeer to Comarnic | 1,064.58 mi (1,713.28 km) |
| Opmeer to Constanta | 1,227.38 mi (1,975.28 km) |
| Opmeer to Corabia | 1,085.32 mi (1,746.65 km) |
| Opmeer to Costesti | 1,059.73 mi (1,705.47 km) |
| Opmeer to Covasna | 1,062.48 mi (1,709.89 km) |
| Opmeer to Craiova | 1,034.21 mi (1,664.40 km) |
| Opmeer to Cristuru Secuiesc | 999.67 mi (1,608.81 km) |
| Opmeer to Cugir | 951.81 mi (1,531.79 km) |
| Opmeer to Cumpana | 1,226.57 mi (1,973.98 km) |
| Opmeer to Curtea de Arges | 1,031.99 mi (1,660.83 km) |
