| South Houston to Cortona | 5,614.41 mi (9,035.53 km) |
| South Houston to Cosenza | 5,952.07 mi (9,578.93 km) |
| South Houston to Cossato | 5,370.96 mi (8,643.72 km) |
| South Houston to Costa Volpino | 5,441.83 mi (8,757.78 km) |
| South Houston to Creazzo | 5,509.45 mi (8,866.60 km) |
| South Houston to Crema | 5,441.24 mi (8,756.83 km) |
| South Houston to Cremona | 5,464.16 mi (8,793.72 km) |
| South Houston to Crevalcore | 5,525.76 mi (8,892.85 km) |
| South Houston to Crispiano | 5,941.19 mi (9,561.42 km) |
| South Houston to Crosia | 5,963.54 mi (9,597.40 km) |
| South Houston to Crotone | 5,998.39 mi (9,653.47 km) |
| South Houston to Cuneo | 5,385.77 mi (8,667.57 km) |
| South Houston to Cuorgne | 5,355.37 mi (8,618.64 km) |
| South Houston to Cusano Milanino | 5,413.95 mi (8,712.91 km) |
| South Houston to Cutro | 5,994.66 mi (9,647.47 km) |
