| Norristown to Cocentaina | 3,871.64 mi (6,230.80 km) |
| Norristown to Coin | 3,726.75 mi (5,997.63 km) |
| Norristown to Colindres | 3,593.94 mi (5,783.89 km) |
| Norristown to Collado-Villalba | 3,644.10 mi (5,864.61 km) |
| Norristown to Colmenar Viejo | 3,654.93 mi (5,882.05 km) |
| Norristown to Colmenarejo | 3,645.77 mi (5,867.29 km) |
| Norristown to Conil de la Frontera | 3,673.05 mi (5,911.21 km) |
| Norristown to Consuegra | 3,697.51 mi (5,950.57 km) |
| Norristown to Corbera de Llobregat | 3,900.35 mi (6,277.01 km) |
| Norristown to Cordoba | 3,687.82 mi (5,934.97 km) |
| Norristown to Coria del Rio | 3,643.54 mi (5,863.70 km) |
| Norristown to Crevillente | 3,869.59 mi (6,227.51 km) |
| Norristown to Cuarte de Huerva | 3,762.68 mi (6,055.45 km) |
| Norristown to Cubellas | 3,894.76 mi (6,268.01 km) |
| Norristown to Cuellar | 3,607.89 mi (5,806.34 km) |
