| South Houston to Castrovillari | 5,929.01 mi (9,541.83 km) |
| South Houston to Catania | 5,973.32 mi (9,613.13 km) |
| South Houston to Catanzaro | 5,983.49 mi (9,629.50 km) |
| South Houston to Cattolica | 5,619.59 mi (9,043.86 km) |
| South Houston to Cava de' Tirreni | 5,829.20 mi (9,381.19 km) |
| South Houston to Cavallino | 5,993.64 mi (9,645.83 km) |
| South Houston to Cavarzere | 5,548.67 mi (8,929.72 km) |
| South Houston to Cave | 5,709.93 mi (9,189.25 km) |
| South Houston to Cavriago | 5,500.68 mi (8,852.49 km) |
| South Houston to Cavriglia | 5,584.09 mi (8,986.72 km) |
| South Houston to Cazzago San Martino | 5,447.74 mi (8,767.29 km) |
| South Houston to Ceccano | 5,736.69 mi (9,232.31 km) |
| South Houston to Cecina | 5,550.43 mi (8,932.56 km) |
| South Houston to Cefalu | 5,904.15 mi (9,501.81 km) |
| South Houston to Ceglie Messapico | 5,950.38 mi (9,576.22 km) |
