| Union City to Cocentaina | 5,987.39 mi (9,635.77 km) |
| Union City to Coin | 5,928.24 mi (9,540.58 km) |
| Union City to Colindres | 5,646.63 mi (9,087.38 km) |
| Union City to Collado-Villalba | 5,762.09 mi (9,273.19 km) |
| Union City to Colmenar Viejo | 5,769.77 mi (9,285.55 km) |
| Union City to Colmenarejo | 5,765.33 mi (9,278.40 km) |
| Union City to Conil de la Frontera | 5,895.05 mi (9,487.17 km) |
| Union City to Consuegra | 5,834.65 mi (9,389.96 km) |
| Union City to Corbera de Llobregat | 5,933.66 mi (9,549.30 km) |
| Union City to Cordoba | 5,867.55 mi (9,442.92 km) |
| Union City to Coria del Rio | 5,847.27 mi (9,410.27 km) |
| Union City to Crevillente | 5,999.13 mi (9,654.67 km) |
| Union City to Cuarte de Huerva | 5,826.33 mi (9,376.56 km) |
| Union City to Cubellas | 5,935.57 mi (9,552.38 km) |
| Union City to Cuellar | 5,713.28 mi (9,194.64 km) |
