| Opmeer to Calafell | 810.15 mi (1,303.81 km) |
| Opmeer to Calahorra | 786.89 mi (1,266.38 km) |
| Opmeer to Calasparra | 1,049.28 mi (1,688.65 km) |
| Opmeer to Calatayud | 842.42 mi (1,355.74 km) |
| Opmeer to Caldas de Montbuy | 775.60 mi (1,248.22 km) |
| Opmeer to Caldas de Reyes | 938.57 mi (1,510.48 km) |
| Opmeer to Calella | 773.16 mi (1,244.27 km) |
| Opmeer to Callosa de Segura | 1,045.28 mi (1,682.22 km) |
| Opmeer to Calpe | 998.98 mi (1,607.70 km) |
| Opmeer to Calvia | 914.87 mi (1,472.35 km) |
| Opmeer to Camas | 1,182.09 mi (1,902.39 km) |
| Opmeer to Cambados | 949.20 mi (1,527.60 km) |
| Opmeer to Cambre | 892.00 mi (1,435.54 km) |
| Opmeer to Cambrils | 824.21 mi (1,326.44 km) |
| Opmeer to Campo de Criptana | 995.54 mi (1,602.17 km) |
