| Rio Grande City to Carmona | 5,296.63 mi (8,524.11 km) |
| Rio Grande City to Cartagena | 5,524.87 mi (8,891.41 km) |
| Rio Grande City to Cartama | 5,368.13 mi (8,639.18 km) |
| Rio Grande City to Cartaya | 5,224.77 mi (8,408.46 km) |
| Rio Grande City to Caspe | 5,461.87 mi (8,790.03 km) |
| Rio Grande City to Cassa de la Selva | 5,576.30 mi (8,974.18 km) |
| Rio Grande City to Castalla | 5,510.27 mi (8,867.92 km) |
| Rio Grande City to Castellbisbal | 5,548.24 mi (8,929.03 km) |
| Rio Grande City to Castelldefels | 5,554.11 mi (8,938.48 km) |
| Rio Grande City to Castello de Ampurias | 5,573.75 mi (8,970.08 km) |
| Rio Grande City to Castellon de la Plana | 5,499.36 mi (8,850.37 km) |
| Rio Grande City to Castilleja de la Cuesta | 5,277.86 mi (8,493.89 km) |
| Rio Grande City to Catarroja | 5,499.01 mi (8,849.80 km) |
| Rio Grande City to Catral | 5,516.81 mi (8,878.45 km) |
| Rio Grande City to Caudete | 5,491.61 mi (8,837.90 km) |
