| Cwmbran to Cocentaina | 900.51 mi (1,449.23 km) |
| Cwmbran to Coin | 1,038.92 mi (1,671.97 km) |
| Cwmbran to Colindres | 570.80 mi (918.61 km) |
| Cwmbran to Collado-Villalba | 762.83 mi (1,227.66 km) |
| Cwmbran to Colmenar Viejo | 760.44 mi (1,223.82 km) |
| Cwmbran to Colmenarejo | 767.86 mi (1,235.75 km) |
| Cwmbran to Conil de la Frontera | 1,073.70 mi (1,727.95 km) |
| Cwmbran to Consuegra | 842.79 mi (1,356.34 km) |
| Cwmbran to Corbera de Llobregat | 744.95 mi (1,198.88 km) |
| Cwmbran to Cordoba | 955.14 mi (1,537.15 km) |
| Cwmbran to Coria del Rio | 1,003.79 mi (1,615.45 km) |
| Cwmbran to Crevillente | 932.33 mi (1,500.45 km) |
| Cwmbran to Cuarte de Huerva | 702.80 mi (1,131.05 km) |
| Cwmbran to Cubellas | 754.98 mi (1,215.02 km) |
| Cwmbran to Cuellar | 710.98 mi (1,144.21 km) |
