| Houston to Cibolo (Texas) | 170.16 mi (273.85 km) |
| Houston to Cicero (Illinois) | 935.44 mi (1,505.44 km) |
| Houston to Cimarron Hills (Colorado) | 820.80 mi (1,320.95 km) |
| Houston to Cincinnati (Ohio) | 894.26 mi (1,439.18 km) |
| Houston to Cinco Ranch (Texas) | 22.55 mi (36.30 km) |
| Houston to Circleville (Ohio) | 978.45 mi (1,574.66 km) |
| Houston to Citrus (California) | 1,349.61 mi (2,171.99 km) |
| Houston to Citrus Heights (California) | 1,595.25 mi (2,567.30 km) |
| Houston to Citrus Park (Florida) | 784.14 mi (1,261.95 km) |
| Houston to Claiborne (Louisiana) | 267.80 mi (430.98 km) |
| Houston to Claremont (California) | 1,339.82 mi (2,156.22 km) |
| Houston to Claremont (New Hampshire) | 1,577.80 mi (2,539.22 km) |
| Houston to Claremore (Oklahoma) | 451.26 mi (726.24 km) |
| Houston to Clarksburg (Maryland) | 1,217.10 mi (1,958.73 km) |
| Houston to Clarksburg (West Virginia) | 1,077.34 mi (1,733.81 km) |
