| Slough to Cadiz | 1,071.91 mi (1,725.08 km) |
| Slough to Calafell | 719.52 mi (1,157.96 km) |
| Slough to Calahorra | 639.53 mi (1,029.22 km) |
| Slough to Calasparra | 918.99 mi (1,478.98 km) |
| Slough to Calatayud | 703.62 mi (1,132.37 km) |
| Slough to Caldas de Montbuy | 694.64 mi (1,117.92 km) |
| Slough to Caldas de Reyes | 721.66 mi (1,161.40 km) |
| Slough to Calella | 700.50 mi (1,127.34 km) |
| Slough to Callosa de Segura | 924.98 mi (1,488.62 km) |
| Slough to Calpe | 889.30 mi (1,431.19 km) |
| Slough to Calvia | 838.44 mi (1,349.34 km) |
| Slough to Camas | 1,010.26 mi (1,625.86 km) |
| Slough to Cambados | 731.85 mi (1,177.80 km) |
| Slough to Cambre | 673.11 mi (1,083.26 km) |
| Slough to Cambrils | 725.64 mi (1,167.81 km) |
