| Hemel Hempstead to Cookeville (Tennessee) | 4,116.00 mi (6,624.06 km) |
| Hemel Hempstead to Coolidge (Arizona) | 5,257.59 mi (8,461.28 km) |
| Hemel Hempstead to Coon Rapids (Minnesota) | 3,981.79 mi (6,408.07 km) |
| Hemel Hempstead to Cooper City (Florida) | 4,400.80 mi (7,082.40 km) |
| Hemel Hempstead to Coos Bay (Oregon) | 5,056.43 mi (8,137.53 km) |
| Hemel Hempstead to Copiague (New York) | 3,418.81 mi (5,502.04 km) |
| Hemel Hempstead to Coppell (Texas) | 4,725.12 mi (7,604.35 km) |
| Hemel Hempstead to Copperas Cove (Texas) | 4,856.76 mi (7,816.21 km) |
| Hemel Hempstead to Coral Gables (Florida) | 4,417.55 mi (7,109.37 km) |
| Hemel Hempstead to Coral Springs (Florida) | 4,388.31 mi (7,062.31 km) |
| Hemel Hempstead to Coral Terrace (Florida) | 4,416.80 mi (7,108.15 km) |
| Hemel Hempstead to Coralville (Iowa) | 4,084.39 mi (6,573.19 km) |
| Hemel Hempstead to Coram (New York) | 3,393.94 mi (5,462.02 km) |
| Hemel Hempstead to Corcoran (California) | 5,343.15 mi (8,598.96 km) |
| Hemel Hempstead to Cordele (Georgia) | 4,250.22 mi (6,840.08 km) |
