| Webster Groves to Cocentaina | 4,626.97 mi (7,446.39 km) |
| Webster Groves to Coin | 4,500.31 mi (7,242.55 km) |
| Webster Groves to Colindres | 4,329.86 mi (6,968.24 km) |
| Webster Groves to Collado-Villalba | 4,397.29 mi (7,076.76 km) |
| Webster Groves to Colmenar Viejo | 4,407.48 mi (7,093.16 km) |
| Webster Groves to Colmenarejo | 4,399.37 mi (7,080.10 km) |
| Webster Groves to Conil de la Frontera | 4,450.62 mi (7,162.58 km) |
| Webster Groves to Consuegra | 4,455.98 mi (7,171.20 km) |
| Webster Groves to Corbera de Llobregat | 4,635.76 mi (7,460.54 km) |
| Webster Groves to Cordoba | 4,456.15 mi (7,171.48 km) |
| Webster Groves to Coria del Rio | 4,416.86 mi (7,108.25 km) |
| Webster Groves to Crevillente | 4,628.16 mi (7,448.31 km) |
| Webster Groves to Cuarte de Huerva | 4,503.84 mi (7,248.23 km) |
| Webster Groves to Cubellas | 4,631.99 mi (7,454.46 km) |
| Webster Groves to Cuellar | 4,357.50 mi (7,012.72 km) |
