| Tomball to Cloverleaf (Texas) | 34.14 mi (54.95 km) |
| Tomball to Cloverly (Maryland) | 1,224.84 mi (1,971.19 km) |
| Tomball to Clovis (California) | 1,458.26 mi (2,346.84 km) |
| Tomball to Clovis (New Mexico) | 534.31 mi (859.89 km) |
| Tomball to Clute (Texas) | 75.09 mi (120.84 km) |
| Tomball to Coachella (California) | 1,227.14 mi (1,974.89 km) |
| Tomball to Coalinga (California) | 1,484.76 mi (2,389.49 km) |
| Tomball to Coamo (Puerto Rico) | 2,015.51 mi (3,243.65 km) |
| Tomball to Coatesville (Pennsylvania) | 1,307.51 mi (2,104.23 km) |
| Tomball to Cockeysville (Maryland) | 1,253.72 mi (2,017.67 km) |
| Tomball to Cocoa (Florida) | 902.56 mi (1,452.52 km) |
| Tomball to Cocoa Beach (Florida) | 911.57 mi (1,467.04 km) |
| Tomball to Coconut Creek (Florida) | 975.32 mi (1,569.63 km) |
| Tomball to Coeur d'Alene (Idaho) | 1,655.42 mi (2,664.15 km) |
| Tomball to Cohoes (New York) | 1,492.81 mi (2,402.45 km) |
