| Grande-Synthe to Cartagena | 940.68 mi (1,513.88 km) |
| Grande-Synthe to Cartama | 1,045.68 mi (1,682.85 km) |
| Grande-Synthe to Cartaya | 1,056.11 mi (1,699.64 km) |
| Grande-Synthe to Caspe | 684.88 mi (1,102.20 km) |
| Grande-Synthe to Cassa de la Selva | 631.03 mi (1,015.54 km) |
| Grande-Synthe to Castalla | 870.05 mi (1,400.21 km) |
| Grande-Synthe to Castellbisbal | 659.13 mi (1,060.77 km) |
| Grande-Synthe to Castelldefels | 672.73 mi (1,082.65 km) |
| Grande-Synthe to Castello de Ampurias | 606.06 mi (975.36 km) |
| Grande-Synthe to Castellon de la Plana | 770.40 mi (1,239.84 km) |
| Grande-Synthe to Castilleja de la Cuesta | 1,027.08 mi (1,652.92 km) |
| Grande-Synthe to Catarroja | 812.85 mi (1,308.16 km) |
| Grande-Synthe to Catral | 901.01 mi (1,450.04 km) |
| Grande-Synthe to Caudete | 865.41 mi (1,392.74 km) |
| Grande-Synthe to Cehegin | 914.96 mi (1,472.49 km) |
