| South Houston to Carmona | 4,987.68 mi (8,026.89 km) |
| South Houston to Cartagena | 5,214.17 mi (8,391.39 km) |
| South Houston to Cartama | 5,059.60 mi (8,142.64 km) |
| South Houston to Cartaya | 4,916.57 mi (7,912.46 km) |
| South Houston to Caspe | 5,148.40 mi (8,285.54 km) |
| South Houston to Cassa de la Selva | 5,262.02 mi (8,468.40 km) |
| South Houston to Castalla | 5,198.67 mi (8,366.45 km) |
| South Houston to Castellbisbal | 5,234.28 mi (8,423.76 km) |
| South Houston to Castelldefels | 5,240.24 mi (8,433.36 km) |
| South Houston to Castello de Ampurias | 5,259.30 mi (8,464.03 km) |
| South Houston to Castellon de la Plana | 5,186.62 mi (8,347.06 km) |
| South Houston to Castilleja de la Cuesta | 4,969.14 mi (7,997.06 km) |
| South Houston to Catarroja | 5,186.75 mi (8,347.26 km) |
| South Houston to Catral | 5,205.60 mi (8,377.60 km) |
| South Houston to Caudete | 5,180.02 mi (8,336.44 km) |
