| Greenock to Carmona | 1,277.71 mi (2,056.27 km) |
| Greenock to Cartagena | 1,279.96 mi (2,059.90 km) |
| Greenock to Cartama | 1,329.27 mi (2,139.26 km) |
| Greenock to Cartaya | 1,294.51 mi (2,083.31 km) |
| Greenock to Caspe | 1,038.95 mi (1,672.03 km) |
| Greenock to Cassa de la Selva | 1,030.05 mi (1,657.71 km) |
| Greenock to Castalla | 1,213.73 mi (1,953.31 km) |
| Greenock to Castellbisbal | 1,045.04 mi (1,681.82 km) |
| Greenock to Castelldefels | 1,058.12 mi (1,702.88 km) |
| Greenock to Castello de Ampurias | 1,008.75 mi (1,623.43 km) |
| Greenock to Castellon de la Plana | 1,124.06 mi (1,809.00 km) |
| Greenock to Castilleja de la Cuesta | 1,284.22 mi (2,066.76 km) |
| Greenock to Catarroja | 1,160.58 mi (1,867.78 km) |
| Greenock to Catral | 1,242.76 mi (2,000.03 km) |
| Greenock to Caudete | 1,204.16 mi (1,937.91 km) |
