| Middle River to Cadiz | 3,726.88 mi (5,997.83 km) |
| Middle River to Calafell | 3,966.63 mi (6,383.68 km) |
| Middle River to Calahorra | 3,769.35 mi (6,066.19 km) |
| Middle River to Calasparra | 3,901.76 mi (6,279.28 km) |
| Middle River to Calatayud | 3,811.95 mi (6,134.74 km) |
| Middle River to Caldas de Montbuy | 3,981.30 mi (6,407.28 km) |
| Middle River to Caldas de Reyes | 3,446.62 mi (5,546.79 km) |
| Middle River to Calella | 4,004.79 mi (6,445.08 km) |
| Middle River to Callosa de Segura | 3,944.92 mi (6,348.74 km) |
| Middle River to Calpe | 3,973.21 mi (6,394.26 km) |
| Middle River to Calvia | 4,061.53 mi (6,536.41 km) |
| Middle River to Camas | 3,714.11 mi (5,977.28 km) |
| Middle River to Cambados | 3,441.41 mi (5,538.41 km) |
| Middle River to Cambre | 3,444.73 mi (5,543.76 km) |
| Middle River to Cambrils | 3,946.70 mi (6,351.61 km) |
