| Portage to Carmona | 4,094.48 mi (6,589.42 km) |
| Portage to Cartagena | 4,303.84 mi (6,926.35 km) |
| Portage to Cartama | 4,169.07 mi (6,709.48 km) |
| Portage to Cartaya | 4,030.29 mi (6,486.12 km) |
| Portage to Caspe | 4,209.74 mi (6,774.92 km) |
| Portage to Cassa de la Selva | 4,311.50 mi (6,938.69 km) |
| Portage to Castalla | 4,280.02 mi (6,888.02 km) |
| Portage to Castellbisbal | 4,288.60 mi (6,901.84 km) |
| Portage to Castelldefels | 4,295.80 mi (6,913.41 km) |
| Portage to Castello de Ampurias | 4,306.11 mi (6,930.01 km) |
| Portage to Castellon de la Plana | 4,256.30 mi (6,849.86 km) |
| Portage to Castilleja de la Cuesta | 4,078.10 mi (6,563.07 km) |
| Portage to Catarroja | 4,261.55 mi (6,858.30 km) |
| Portage to Catral | 4,290.55 mi (6,904.97 km) |
| Portage to Caudete | 4,261.62 mi (6,858.41 km) |
