| Port Glasgow to Cognac | 732.20 mi (1,178.35 km) |
| Port Glasgow to Cogolin | 1,007.22 mi (1,620.97 km) |
| Port Glasgow to Colmar | 744.18 mi (1,197.64 km) |
| Port Glasgow to Colombes | 565.20 mi (909.61 km) |
| Port Glasgow to Colomiers | 891.88 mi (1,435.34 km) |
| Port Glasgow to Combs-la-Ville | 587.29 mi (945.15 km) |
| Port Glasgow to Comines | 477.53 mi (768.50 km) |
| Port Glasgow to Compiegne | 548.84 mi (883.27 km) |
| Port Glasgow to Concarneau | 557.76 mi (897.63 km) |
| Port Glasgow to Conde-sur-l'Escaut | 510.33 mi (821.29 km) |
| Port Glasgow to Conflans-Sainte-Honorine | 557.30 mi (896.88 km) |
| Port Glasgow to Corbas | 822.03 mi (1,322.94 km) |
| Port Glasgow to Corbeil-Essonnes | 589.01 mi (947.91 km) |
| Port Glasgow to Cormeilles-en-Parisis | 561.05 mi (902.92 km) |
| Port Glasgow to Cosne sur Loire | 672.37 mi (1,082.08 km) |
