| Johnston to Cocentaina | 4,662.81 mi (7,504.07 km) |
| Johnston to Coin | 4,555.07 mi (7,330.68 km) |
| Johnston to Colindres | 4,351.25 mi (7,002.65 km) |
| Johnston to Collado-Villalba | 4,432.63 mi (7,133.63 km) |
| Johnston to Colmenar Viejo | 4,442.18 mi (7,149.00 km) |
| Johnston to Colmenarejo | 4,435.05 mi (7,137.53 km) |
| Johnston to Conil de la Frontera | 4,510.19 mi (7,258.44 km) |
| Johnston to Consuegra | 4,495.75 mi (7,235.21 km) |
| Johnston to Corbera de Llobregat | 4,654.66 mi (7,490.95 km) |
| Johnston to Cordoba | 4,505.59 mi (7,251.04 km) |
| Johnston to Coria del Rio | 4,471.83 mi (7,196.72 km) |
| Johnston to Crevillente | 4,667.00 mi (7,510.81 km) |
| Johnston to Cuarte de Huerva | 4,528.23 mi (7,287.49 km) |
| Johnston to Cubellas | 4,652.36 mi (7,487.24 km) |
| Johnston to Cuellar | 4,389.96 mi (7,064.96 km) |
