| Pottstown to Cocentaina | 3,882.52 mi (6,248.31 km) |
| Pottstown to Coin | 3,738.68 mi (6,016.82 km) |
| Pottstown to Colindres | 3,603.76 mi (5,799.69 km) |
| Pottstown to Collado-Villalba | 3,654.82 mi (5,881.87 km) |
| Pottstown to Colmenar Viejo | 3,665.62 mi (5,899.25 km) |
| Pottstown to Colmenarejo | 3,656.51 mi (5,884.59 km) |
| Pottstown to Conil de la Frontera | 3,685.23 mi (5,930.80 km) |
| Pottstown to Consuegra | 3,708.54 mi (5,968.31 km) |
| Pottstown to Corbera de Llobregat | 3,910.21 mi (6,292.88 km) |
| Pottstown to Cordoba | 3,699.41 mi (5,953.63 km) |
| Pottstown to Coria del Rio | 3,655.43 mi (5,882.85 km) |
| Pottstown to Crevillente | 3,880.65 mi (6,245.30 km) |
| Pottstown to Cuarte de Huerva | 3,772.80 mi (6,071.73 km) |
| Pottstown to Cubellas | 3,904.71 mi (6,284.02 km) |
| Pottstown to Cuellar | 3,618.41 mi (5,823.27 km) |
