| Hemel Hempstead to Carson (California) | 5,430.97 mi (8,740.31 km) |
| Hemel Hempstead to Carson City (Nevada) | 5,172.80 mi (8,324.82 km) |
| Hemel Hempstead to Carteret (New Jersey) | 3,456.61 mi (5,562.88 km) |
| Hemel Hempstead to Cartersville (Georgia) | 4,183.81 mi (6,733.19 km) |
| Hemel Hempstead to Carthage (Missouri) | 4,409.87 mi (7,097.00 km) |
| Hemel Hempstead to Cary (Illinois) | 3,934.62 mi (6,332.15 km) |
| Hemel Hempstead to Cary (North Carolina) | 3,862.49 mi (6,216.08 km) |
| Hemel Hempstead to Casa de Oro-Mount Helix (California) | 5,450.59 mi (8,771.87 km) |
| Hemel Hempstead to Casa Grande (Arizona) | 5,267.40 mi (8,477.06 km) |
| Hemel Hempstead to Casas Adobes (Arizona) | 5,272.73 mi (8,485.64 km) |
| Hemel Hempstead to Cascades (Virginia) | 3,653.34 mi (5,879.49 km) |
| Hemel Hempstead to Casper (Wyoming) | 4,545.86 mi (7,315.86 km) |
| Hemel Hempstead to Casselberry (Florida) | 4,312.54 mi (6,940.37 km) |
| Hemel Hempstead to Castaic (California) | 5,406.02 mi (8,700.14 km) |
| Hemel Hempstead to Castle Pines (Colorado) | 4,674.11 mi (7,522.26 km) |
