| Portales to Cocentaina | 5,391.63 mi (8,676.98 km) |
| Portales to Coin | 5,274.69 mi (8,488.80 km) |
| Portales to Colindres | 5,084.64 mi (8,182.93 km) |
| Portales to Collado-Villalba | 5,161.48 mi (8,306.60 km) |
| Portales to Colmenar Viejo | 5,171.29 mi (8,322.38 km) |
| Portales to Colmenarejo | 5,163.77 mi (8,310.28 km) |
| Portales to Conil de la Frontera | 5,226.93 mi (8,411.93 km) |
| Portales to Consuegra | 5,222.82 mi (8,405.32 km) |
| Portales to Corbera de Llobregat | 5,388.86 mi (8,672.53 km) |
| Portales to Cordoba | 5,228.07 mi (8,413.76 km) |
| Portales to Coria del Rio | 5,191.27 mi (8,354.55 km) |
| Portales to Crevillente | 5,394.59 mi (8,681.75 km) |
| Portales to Cuarte de Huerva | 5,260.89 mi (8,466.59 km) |
| Portales to Cubellas | 5,386.19 mi (8,668.23 km) |
| Portales to Cuellar | 5,119.87 mi (8,239.63 km) |
