| Oak Ridge to Cocentaina | 4,436.17 mi (7,139.33 km) |
| Oak Ridge to Coin | 4,288.04 mi (6,900.94 km) |
| Oak Ridge to Colindres | 4,159.06 mi (6,693.36 km) |
| Oak Ridge to Collado-Villalba | 4,208.90 mi (6,773.57 km) |
| Oak Ridge to Colmenar Viejo | 4,219.78 mi (6,791.08 km) |
| Oak Ridge to Colmenarejo | 4,210.53 mi (6,776.20 km) |
| Oak Ridge to Conil de la Frontera | 4,233.12 mi (6,812.54 km) |
| Oak Ridge to Consuegra | 4,261.78 mi (6,858.68 km) |
| Oak Ridge to Corbera de Llobregat | 4,465.50 mi (7,186.53 km) |
| Oak Ridge to Cordoba | 4,250.46 mi (6,840.46 km) |
| Oak Ridge to Coria del Rio | 4,204.96 mi (6,767.24 km) |
| Oak Ridge to Crevillente | 4,433.77 mi (7,135.47 km) |
| Oak Ridge to Cuarte de Huerva | 4,327.89 mi (6,965.07 km) |
| Oak Ridge to Cubellas | 4,459.94 mi (7,177.59 km) |
| Oak Ridge to Cuellar | 4,172.92 mi (6,715.66 km) |
