| Tomball to Cadillac (Michigan) | 1,125.72 mi (1,811.67 km) |
| Tomball to Caguas (Puerto Rico) | 2,028.75 mi (3,264.96 km) |
| Tomball to Cahokia (Illinois) | 662.10 mi (1,065.55 km) |
| Tomball to Calabasas (California) | 1,374.32 mi (2,211.76 km) |
| Tomball to Caldwell (Idaho) | 1,485.43 mi (2,390.57 km) |
| Tomball to Caledonia (Wisconsin) | 976.48 mi (1,571.49 km) |
| Tomball to Calera (Alabama) | 562.35 mi (905.02 km) |
| Tomball to Calexico (California) | 1,184.03 mi (1,905.50 km) |
| Tomball to Calhoun (Georgia) | 693.30 mi (1,115.76 km) |
| Tomball to California (Maryland) | 1,227.70 mi (1,975.79 km) |
| Tomball to California City (California) | 1,338.10 mi (2,153.46 km) |
| Tomball to Callaway (Florida) | 601.22 mi (967.58 km) |
| Tomball to Calumet City (Illinois) | 914.14 mi (1,471.17 km) |
| Tomball to Calverton (Maryland) | 1,225.90 mi (1,972.90 km) |
| Tomball to Camano (Washington) | 1,888.39 mi (3,039.07 km) |
