| Hemel Hempstead to Carlsbad (New Mexico) | 5,027.07 mi (8,090.29 km) |
| Hemel Hempstead to Carmel (Indiana) | 3,959.19 mi (6,371.71 km) |
| Hemel Hempstead to Carmichael (California) | 5,249.68 mi (8,448.55 km) |
| Hemel Hempstead to Carney (Maryland) | 3,602.12 mi (5,797.05 km) |
| Hemel Hempstead to Carnot-Moon (Pennsylvania) | 3,700.60 mi (5,955.54 km) |
| Hemel Hempstead to Carol Stream (Illinois) | 3,943.88 mi (6,347.07 km) |
| Hemel Hempstead to Carolina (Puerto Rico) | 4,184.54 mi (6,734.36 km) |
| Hemel Hempstead to Carolina Forest (South Carolina) | 3,962.14 mi (6,376.44 km) |
| Hemel Hempstead to Carpentersville (Illinois) | 3,940.34 mi (6,341.37 km) |
| Hemel Hempstead to Carpinteria (California) | 5,438.76 mi (8,752.83 km) |
| Hemel Hempstead to Carrboro (North Carolina) | 3,866.72 mi (6,222.88 km) |
| Hemel Hempstead to Carroll (Iowa) | 4,186.66 mi (6,737.77 km) |
| Hemel Hempstead to Carrollton (Georgia) | 4,223.78 mi (6,797.52 km) |
| Hemel Hempstead to Carrollton (Texas) | 4,720.35 mi (7,596.67 km) |
| Hemel Hempstead to Carrollwood (Florida) | 4,392.74 mi (7,069.43 km) |
