| Middle River to Carmona | 3,732.00 mi (6,006.07 km) |
| Middle River to Cartagena | 3,956.35 mi (6,367.13 km) |
| Middle River to Cartama | 3,804.51 mi (6,122.77 km) |
| Middle River to Cartaya | 3,662.12 mi (5,893.61 km) |
| Middle River to Caspe | 3,890.63 mi (6,261.37 km) |
| Middle River to Cassa de la Selva | 4,006.13 mi (6,447.25 km) |
| Middle River to Castalla | 3,940.26 mi (6,341.24 km) |
| Middle River to Castellbisbal | 3,977.45 mi (6,401.09 km) |
| Middle River to Castelldefels | 3,983.20 mi (6,410.34 km) |
| Middle River to Castello de Ampurias | 4,004.07 mi (6,443.93 km) |
| Middle River to Castellon de la Plana | 3,928.20 mi (6,321.82 km) |
| Middle River to Castilleja de la Cuesta | 3,713.83 mi (5,976.83 km) |
| Middle River to Catarroja | 3,928.21 mi (6,321.84 km) |
| Middle River to Catral | 3,947.39 mi (6,352.71 km) |
| Middle River to Caudete | 3,921.62 mi (6,311.24 km) |
