| Grefrath to Cognac | 494.62 mi (796.02 km) |
| Grefrath to Cogolin | 558.61 mi (898.99 km) |
| Grefrath to Colmar | 229.39 mi (369.17 km) |
| Grefrath to Colombes | 246.07 mi (396.01 km) |
| Grefrath to Colomiers | 582.16 mi (936.90 km) |
| Grefrath to Combs-la-Ville | 249.19 mi (401.04 km) |
| Grefrath to Comines | 150.11 mi (241.58 km) |
| Grefrath to Compiegne | 204.04 mi (328.38 km) |
| Grefrath to Concarneau | 517.26 mi (832.45 km) |
| Grefrath to Conde-sur-l'Escaut | 134.61 mi (216.63 km) |
| Grefrath to Conflans-Sainte-Honorine | 247.58 mi (398.44 km) |
| Grefrath to Corbas | 397.11 mi (639.09 km) |
| Grefrath to Corbeil-Essonnes | 254.45 mi (409.50 km) |
| Grefrath to Cormeilles-en-Parisis | 245.33 mi (394.83 km) |
| Grefrath to Cosne sur Loire | 311.68 mi (501.61 km) |
