| Grefrath to Campos del Puerto | 838.02 mi (1,348.66 km) |
| Grefrath to Canals | 918.23 mi (1,477.74 km) |
| Grefrath to Candelaria | 1,975.94 mi (3,179.97 km) |
| Grefrath to Canet de Mar | 696.43 mi (1,120.80 km) |
| Grefrath to Cangas | 947.74 mi (1,525.25 km) |
| Grefrath to Cangas de Narcea | 824.30 mi (1,326.59 km) |
| Grefrath to Canovellas | 698.44 mi (1,124.03 km) |
| Grefrath to Canteras | 1,014.47 mi (1,632.64 km) |
| Grefrath to Cantillana | 1,119.26 mi (1,801.27 km) |
| Grefrath to Capdepera | 816.05 mi (1,313.30 km) |
| Grefrath to Carballo | 897.48 mi (1,444.35 km) |
| Grefrath to Carcagente | 905.32 mi (1,456.97 km) |
| Grefrath to Cardedeu | 695.89 mi (1,119.93 km) |
| Grefrath to Carlet | 899.79 mi (1,448.07 km) |
| Grefrath to Carmona | 1,122.70 mi (1,806.81 km) |
