| San Diego to Cocentaina | 6,040.03 mi (9,720.49 km) |
| San Diego to Coin | 5,952.08 mi (9,578.96 km) |
| San Diego to Colindres | 5,712.92 mi (9,194.06 km) |
| San Diego to Collado-Villalba | 5,810.95 mi (9,351.82 km) |
| San Diego to Colmenar Viejo | 5,819.70 mi (9,365.90 km) |
| San Diego to Colmenarejo | 5,813.75 mi (9,356.33 km) |
| San Diego to Conil de la Frontera | 5,911.30 mi (9,513.31 km) |
| San Diego to Consuegra | 5,878.56 mi (9,460.63 km) |
| San Diego to Corbera de Llobregat | 6,009.86 mi (9,671.94 km) |
| San Diego to Cordoba | 5,898.08 mi (9,492.05 km) |
| San Diego to Coria del Rio | 5,869.40 mi (9,445.89 km) |
| San Diego to Crevillente | 6,047.62 mi (9,732.70 km) |
| San Diego to Cuarte de Huerva | 5,892.25 mi (9,482.66 km) |
| San Diego to Cubellas | 6,009.68 mi (9,671.65 km) |
| San Diego to Cuellar | 5,765.26 mi (9,278.29 km) |
