| River Grove to Carmona | 4,206.89 mi (6,770.33 km) |
| River Grove to Cartagena | 4,414.80 mi (7,104.94 km) |
| River Grove to Cartama | 4,281.61 mi (6,890.59 km) |
| River Grove to Cartaya | 4,143.19 mi (6,667.83 km) |
| River Grove to Caspe | 4,317.97 mi (6,949.11 km) |
| River Grove to Cassa de la Selva | 4,418.17 mi (7,110.35 km) |
| River Grove to Castalla | 4,390.27 mi (7,065.46 km) |
| River Grove to Castellbisbal | 4,395.93 mi (7,074.56 km) |
| River Grove to Castelldefels | 4,403.27 mi (7,086.37 km) |
| River Grove to Castello de Ampurias | 4,412.41 mi (7,101.09 km) |
| River Grove to Castellon de la Plana | 4,365.43 mi (7,025.48 km) |
| River Grove to Castilleja de la Cuesta | 4,190.67 mi (6,744.23 km) |
| River Grove to Catarroja | 4,371.19 mi (7,034.76 km) |
| River Grove to Catral | 4,401.12 mi (7,082.92 km) |
| River Grove to Caudete | 4,371.91 mi (7,035.90 km) |
