| Gravelines to Ciampino | 805.77 mi (1,296.76 km) |
| Gravelines to Cicciano | 910.81 mi (1,465.81 km) |
| Gravelines to Cingoli | 739.03 mi (1,189.35 km) |
| Gravelines to Cinisello Balsamo | 496.93 mi (799.73 km) |
| Gravelines to Cinisi | 1,034.88 mi (1,665.48 km) |
| Gravelines to Cirie | 470.49 mi (757.18 km) |
| Gravelines to Ciro Marina | 1,081.24 mi (1,740.08 km) |
| Gravelines to Cislago | 484.03 mi (778.97 km) |
| Gravelines to Cisterna di Latina | 824.35 mi (1,326.66 km) |
| Gravelines to Cisternino | 1,018.10 mi (1,638.48 km) |
| Gravelines to Citta di Castello | 702.80 mi (1,131.05 km) |
| Gravelines to Citta Sant'Angelo | 811.09 mi (1,305.32 km) |
| Gravelines to Cittadella | 576.05 mi (927.06 km) |
| Gravelines to Cittanova | 1,106.30 mi (1,780.42 km) |
| Gravelines to Cividale del Friuli | 616.58 mi (992.29 km) |
