| Grottammare to Cognac | 724.82 mi (1,166.49 km) |
| Grottammare to Cogolin | 370.28 mi (595.92 km) |
| Grottammare to Colmar | 471.94 mi (759.52 km) |
| Grottammare to Colombes | 691.06 mi (1,112.15 km) |
| Grottammare to Colomiers | 630.87 mi (1,015.29 km) |
| Grottammare to Combs-la-Ville | 669.92 mi (1,078.13 km) |
| Grottammare to Comines | 741.02 mi (1,192.56 km) |
| Grottammare to Compiegne | 688.65 mi (1,108.28 km) |
| Grottammare to Concarneau | 923.39 mi (1,486.05 km) |
| Grottammare to Conde-sur-l'Escaut | 707.62 mi (1,138.81 km) |
| Grottammare to Conflans-Sainte-Honorine | 699.75 mi (1,126.14 km) |
| Grottammare to Corbas | 479.79 mi (772.15 km) |
| Grottammare to Corbeil-Essonnes | 670.94 mi (1,079.77 km) |
| Grottammare to Cormeilles-en-Parisis | 694.86 mi (1,118.27 km) |
| Grottammare to Cosne sur Loire | 613.20 mi (986.85 km) |
