| Portage to Cocentaina | 4,284.78 mi (6,895.68 km) |
| Portage to Coin | 4,165.17 mi (6,703.19 km) |
| Portage to Colindres | 3,983.22 mi (6,410.37 km) |
| Portage to Collado-Villalba | 4,054.78 mi (6,525.55 km) |
| Portage to Colmenar Viejo | 4,064.77 mi (6,541.62 km) |
| Portage to Colmenarejo | 4,056.97 mi (6,529.07 km) |
| Portage to Conil de la Frontera | 4,117.54 mi (6,626.54 km) |
| Portage to Consuegra | 4,115.01 mi (6,622.47 km) |
| Portage to Corbera de Llobregat | 4,288.66 mi (6,901.93 km) |
| Portage to Cordoba | 4,118.79 mi (6,628.55 km) |
| Portage to Coria del Rio | 4,081.75 mi (6,568.94 km) |
| Portage to Crevillente | 4,286.98 mi (6,899.23 km) |
| Portage to Cuarte de Huerva | 4,158.10 mi (6,691.82 km) |
| Portage to Cubellas | 4,285.25 mi (6,896.45 km) |
| Portage to Cuellar | 4,014.04 mi (6,459.98 km) |
