| Houston to Busto Arsizio | 5,398.41 mi (8,687.89 km) |
| Houston to Busto Garolfo | 5,402.12 mi (8,693.88 km) |
| Houston to Cabras | 5,587.26 mi (8,991.82 km) |
| Houston to Cadelbosco di Sopra | 5,501.49 mi (8,853.79 km) |
| Houston to Cadoneghe | 5,531.14 mi (8,901.51 km) |
| Houston to Cagli | 5,632.41 mi (9,064.49 km) |
| Houston to Cagliari | 5,639.03 mi (9,075.14 km) |
| Houston to Cairo Montenotte | 5,416.51 mi (8,717.03 km) |
| Houston to Caivano | 5,803.01 mi (9,339.04 km) |
| Houston to Calcinaia | 5,541.94 mi (8,918.89 km) |
| Houston to Calcinato | 5,468.59 mi (8,800.84 km) |
| Houston to Calderara di Reno | 5,536.57 mi (8,910.25 km) |
| Houston to Caldogno | 5,507.66 mi (8,863.72 km) |
| Houston to Calenzano | 5,558.35 mi (8,945.30 km) |
| Houston to Calolziocorte | 5,415.81 mi (8,715.90 km) |
