| Johnstown to Cocentaina | 4,036.03 mi (6,495.37 km) |
| Johnstown to Coin | 3,897.48 mi (6,272.39 km) |
| Johnstown to Colindres | 3,751.57 mi (6,037.57 km) |
| Johnstown to Collado-Villalba | 3,807.58 mi (6,127.71 km) |
| Johnstown to Colmenar Viejo | 3,818.20 mi (6,144.80 km) |
| Johnstown to Colmenarejo | 3,809.39 mi (6,130.62 km) |
| Johnstown to Conil de la Frontera | 3,845.24 mi (6,188.31 km) |
| Johnstown to Consuegra | 3,862.85 mi (6,216.66 km) |
| Johnstown to Corbera de Llobregat | 4,058.14 mi (6,530.95 km) |
| Johnstown to Cordoba | 3,856.63 mi (6,206.64 km) |
| Johnstown to Coria del Rio | 3,814.13 mi (6,138.25 km) |
| Johnstown to Crevillente | 4,035.09 mi (6,493.86 km) |
| Johnstown to Cuarte de Huerva | 3,922.22 mi (6,312.21 km) |
| Johnstown to Cubellas | 4,053.14 mi (6,522.89 km) |
| Johnstown to Cuellar | 3,770.12 mi (6,067.42 km) |
