| Grande-Synthe to Ciampino | 802.11 mi (1,290.86 km) |
| Grande-Synthe to Cicciano | 906.76 mi (1,459.29 km) |
| Grande-Synthe to Cingoli | 734.57 mi (1,182.18 km) |
| Grande-Synthe to Cinisello Balsamo | 493.10 mi (793.56 km) |
| Grande-Synthe to Cinisi | 1,032.05 mi (1,660.92 km) |
| Grande-Synthe to Cirie | 467.81 mi (752.86 km) |
| Grande-Synthe to Ciro Marina | 1,076.88 mi (1,733.08 km) |
| Grande-Synthe to Cislago | 480.27 mi (772.93 km) |
| Grande-Synthe to Cisterna di Latina | 820.67 mi (1,320.75 km) |
| Grande-Synthe to Cisternino | 1,013.31 mi (1,630.76 km) |
| Grande-Synthe to Citta di Castello | 698.65 mi (1,124.38 km) |
| Grande-Synthe to Citta Sant'Angelo | 806.68 mi (1,298.22 km) |
| Grande-Synthe to Cittadella | 571.04 mi (919.00 km) |
| Grande-Synthe to Cittanova | 1,102.48 mi (1,774.28 km) |
| Grande-Synthe to Cividale del Friuli | 610.85 mi (983.07 km) |
