| Grefrath to Calafell | 736.07 mi (1,184.59 km) |
| Grefrath to Calahorra | 736.57 mi (1,185.40 km) |
| Grefrath to Calasparra | 986.22 mi (1,587.17 km) |
| Grefrath to Calatayud | 786.80 mi (1,266.22 km) |
| Grefrath to Caldas de Montbuy | 698.93 mi (1,124.82 km) |
| Grefrath to Caldas de Reyes | 925.79 mi (1,489.91 km) |
| Grefrath to Calella | 693.72 mi (1,116.44 km) |
| Grefrath to Callosa de Segura | 978.20 mi (1,574.26 km) |
| Grefrath to Calpe | 928.44 mi (1,494.17 km) |
| Grefrath to Calvia | 833.95 mi (1,342.11 km) |
| Grefrath to Camas | 1,136.92 mi (1,829.69 km) |
| Grefrath to Cambados | 936.62 mi (1,507.34 km) |
| Grefrath to Cambre | 881.62 mi (1,418.83 km) |
| Grefrath to Cambrils | 752.70 mi (1,211.35 km) |
| Grefrath to Campo de Criptana | 942.10 mi (1,516.17 km) |
