| Owings Mills to Cocentaina | 3,962.32 mi (6,376.74 km) |
| Owings Mills to Coin | 3,816.39 mi (6,141.88 km) |
| Owings Mills to Colindres | 3,685.21 mi (5,930.76 km) |
| Owings Mills to Collado-Villalba | 3,734.91 mi (6,010.75 km) |
| Owings Mills to Colmenar Viejo | 3,745.76 mi (6,028.22 km) |
| Owings Mills to Colmenarejo | 3,736.56 mi (6,013.41 km) |
| Owings Mills to Conil de la Frontera | 3,762.35 mi (6,054.91 km) |
| Owings Mills to Consuegra | 3,788.09 mi (6,096.34 km) |
| Owings Mills to Corbera de Llobregat | 3,991.60 mi (6,423.86 km) |
| Owings Mills to Cordoba | 3,777.84 mi (6,079.85 km) |
| Owings Mills to Coria del Rio | 3,733.20 mi (6,008.01 km) |
| Owings Mills to Crevillente | 3,960.13 mi (6,373.22 km) |
| Owings Mills to Cuarte de Huerva | 3,853.83 mi (6,202.14 km) |
| Owings Mills to Cubellas | 3,985.97 mi (6,414.81 km) |
| Owings Mills to Cuellar | 3,698.83 mi (5,952.68 km) |
