| Foster City to Cocentaina | 5,998.88 mi (9,654.27 km) |
| Foster City to Coin | 5,940.25 mi (9,559.90 km) |
| Foster City to Colindres | 5,657.90 mi (9,105.51 km) |
| Foster City to Collado-Villalba | 5,773.68 mi (9,291.83 km) |
| Foster City to Colmenar Viejo | 5,781.34 mi (9,304.17 km) |
| Foster City to Colmenarejo | 5,776.92 mi (9,297.06 km) |
| Foster City to Conil de la Frontera | 5,907.18 mi (9,506.70 km) |
| Foster City to Consuegra | 5,846.31 mi (9,408.73 km) |
| Foster City to Corbera de Llobregat | 5,944.70 mi (9,567.07 km) |
| Foster City to Cordoba | 5,879.45 mi (9,462.07 km) |
| Foster City to Coria del Rio | 5,859.31 mi (9,429.65 km) |
| Foster City to Crevillente | 6,010.70 mi (9,673.28 km) |
| Foster City to Cuarte de Huerva | 5,837.58 mi (9,394.68 km) |
| Foster City to Cubellas | 5,946.65 mi (9,570.21 km) |
| Foster City to Cuellar | 5,724.81 mi (9,213.20 km) |
