| Grande-Synthe to Cosenza | 1,053.17 mi (1,694.92 km) |
| Grande-Synthe to Cossato | 462.63 mi (744.53 km) |
| Grande-Synthe to Costa Volpino | 505.49 mi (813.52 km) |
| Grande-Synthe to Creazzo | 566.36 mi (911.48 km) |
| Grande-Synthe to Crema | 516.99 mi (832.02 km) |
| Grande-Synthe to Cremona | 540.21 mi (869.38 km) |
| Grande-Synthe to Crevalcore | 597.09 mi (960.92 km) |
| Grande-Synthe to Crispiano | 1,013.60 mi (1,631.23 km) |
| Grande-Synthe to Crosia | 1,054.44 mi (1,696.95 km) |
| Grande-Synthe to Crotone | 1,092.42 mi (1,758.08 km) |
| Grande-Synthe to Cuneo | 518.74 mi (834.83 km) |
| Grande-Synthe to Cuorgne | 459.76 mi (739.92 km) |
| Grande-Synthe to Cusano Milanino | 492.11 mi (791.98 km) |
| Grande-Synthe to Cutro | 1,091.01 mi (1,755.81 km) |
| Grande-Synthe to Cutrofiano | 1,071.88 mi (1,725.02 km) |
