| Sidcup to Cocentaina | 876.59 mi (1,410.73 km) |
| Sidcup to Coin | 1,047.28 mi (1,685.44 km) |
| Sidcup to Colindres | 578.92 mi (931.68 km) |
| Sidcup to Collado-Villalba | 771.03 mi (1,240.86 km) |
| Sidcup to Colmenar Viejo | 766.45 mi (1,233.49 km) |
| Sidcup to Colmenarejo | 776.01 mi (1,248.87 km) |
| Sidcup to Conil de la Frontera | 1,090.86 mi (1,755.56 km) |
| Sidcup to Consuegra | 845.70 mi (1,361.02 km) |
| Sidcup to Corbera de Llobregat | 696.99 mi (1,121.69 km) |
| Sidcup to Cordoba | 965.37 mi (1,553.61 km) |
| Sidcup to Coria del Rio | 1,022.45 mi (1,645.48 km) |
| Sidcup to Crevillente | 911.57 mi (1,467.02 km) |
| Sidcup to Cuarte de Huerva | 681.79 mi (1,097.24 km) |
| Sidcup to Cubellas | 709.80 mi (1,142.32 km) |
| Sidcup to Cuellar | 723.58 mi (1,164.49 km) |
