| Smyrna to Cocentaina | 4,521.77 mi (7,277.09 km) |
| Smyrna to Coin | 4,365.83 mi (7,026.12 km) |
| Smyrna to Colindres | 4,252.18 mi (6,843.23 km) |
| Smyrna to Collado-Villalba | 4,295.84 mi (6,913.49 km) |
| Smyrna to Colmenar Viejo | 4,306.94 mi (6,931.35 km) |
| Smyrna to Colmenarejo | 4,297.31 mi (6,915.86 km) |
| Smyrna to Conil de la Frontera | 4,308.92 mi (6,934.54 km) |
| Smyrna to Consuegra | 4,346.51 mi (6,995.03 km) |
| Smyrna to Corbera de Llobregat | 4,558.18 mi (7,335.69 km) |
| Smyrna to Cordoba | 4,330.89 mi (6,969.90 km) |
| Smyrna to Coria del Rio | 4,283.08 mi (6,892.94 km) |
| Smyrna to Crevillente | 4,518.07 mi (7,271.13 km) |
| Smyrna to Cuarte de Huerva | 4,418.94 mi (7,111.59 km) |
| Smyrna to Cubellas | 4,552.04 mi (7,325.80 km) |
| Smyrna to Cuellar | 4,261.29 mi (6,857.89 km) |
