| South Houston to Cadiz | 4,980.50 mi (8,015.33 km) |
| South Houston to Calafell | 5,223.91 mi (8,407.08 km) |
| South Houston to Calahorra | 5,026.78 mi (8,089.82 km) |
| South Houston to Calasparra | 5,159.81 mi (8,303.91 km) |
| South Houston to Calatayud | 5,070.02 mi (8,159.41 km) |
| South Houston to Caldas de Montbuy | 5,237.86 mi (8,429.53 km) |
| South Houston to Caldas de Reyes | 4,705.09 mi (7,572.12 km) |
| South Houston to Calella | 5,261.14 mi (8,466.99 km) |
| South Houston to Callosa de Segura | 5,203.09 mi (8,373.57 km) |
| South Houston to Calpe | 5,231.69 mi (8,419.60 km) |
| South Houston to Calvia | 5,319.73 mi (8,561.28 km) |
| South Houston to Camas | 4,969.46 mi (7,997.57 km) |
| South Houston to Cambados | 4,699.92 mi (7,563.78 km) |
| South Houston to Cambre | 4,702.89 mi (7,568.57 km) |
| South Houston to Cambrils | 5,204.28 mi (8,375.48 km) |
