| Tomball to Cibolo (Texas) | 159.65 mi (256.93 km) |
| Tomball to Cicero (Illinois) | 922.15 mi (1,484.05 km) |
| Tomball to Cimarron Hills (Colorado) | 795.46 mi (1,280.16 km) |
| Tomball to Cincinnati (Ohio) | 887.45 mi (1,428.20 km) |
| Tomball to Cinco Ranch (Texas) | 25.99 mi (41.82 km) |
| Tomball to Circleville (Ohio) | 972.45 mi (1,565.00 km) |
| Tomball to Citrus (California) | 1,329.79 mi (2,140.10 km) |
| Tomball to Citrus Heights (California) | 1,572.73 mi (2,531.06 km) |
| Tomball to Citrus Park (Florida) | 800.18 mi (1,287.77 km) |
| Tomball to Claiborne (Louisiana) | 263.16 mi (423.52 km) |
| Tomball to Claremont (California) | 1,319.98 mi (2,124.30 km) |
| Tomball to Claremont (New Hampshire) | 1,573.58 mi (2,532.43 km) |
| Tomball to Claremore (Oklahoma) | 429.73 mi (691.58 km) |
| Tomball to Clarksburg (Maryland) | 1,215.42 mi (1,956.03 km) |
| Tomball to Clarksburg (West Virginia) | 1,073.79 mi (1,728.09 km) |
