| Grays to Cadiz | 1,082.42 mi (1,741.98 km) |
| Grays to Calafell | 712.33 mi (1,146.39 km) |
| Grays to Calahorra | 643.05 mi (1,034.90 km) |
| Grays to Calasparra | 920.39 mi (1,481.22 km) |
| Grays to Calatayud | 705.72 mi (1,135.75 km) |
| Grays to Caldas de Montbuy | 685.55 mi (1,103.29 km) |
| Grays to Caldas de Reyes | 743.19 mi (1,196.04 km) |
| Grays to Calella | 690.01 mi (1,110.46 km) |
| Grays to Callosa de Segura | 924.44 mi (1,487.74 km) |
| Grays to Calpe | 886.57 mi (1,426.80 km) |
| Grays to Calvia | 829.47 mi (1,334.91 km) |
| Grays to Camas | 1,020.80 mi (1,642.81 km) |
| Grays to Cambados | 753.54 mi (1,212.70 km) |
| Grays to Cambre | 695.13 mi (1,118.70 km) |
| Grays to Cambrils | 719.95 mi (1,158.65 km) |
