| Rickmansworth to Carson (California) | 5,436.31 mi (8,748.89 km) |
| Rickmansworth to Carson City (Nevada) | 5,178.54 mi (8,334.05 km) |
| Rickmansworth to Carteret (New Jersey) | 3,459.18 mi (5,567.01 km) |
| Rickmansworth to Cartersville (Georgia) | 4,186.52 mi (6,737.55 km) |
| Rickmansworth to Carthage (Missouri) | 4,413.66 mi (7,103.09 km) |
| Rickmansworth to Cary (Illinois) | 3,938.45 mi (6,338.33 km) |
| Rickmansworth to Cary (North Carolina) | 3,864.86 mi (6,219.88 km) |
| Rickmansworth to Casa de Oro-Mount Helix (California) | 5,455.76 mi (8,780.20 km) |
| Rickmansworth to Casa Grande (Arizona) | 5,272.20 mi (8,484.78 km) |
| Rickmansworth to Casas Adobes (Arizona) | 5,277.43 mi (8,493.20 km) |
| Rickmansworth to Cascades (Virginia) | 3,655.98 mi (5,883.73 km) |
| Rickmansworth to Casper (Wyoming) | 4,550.98 mi (7,324.09 km) |
| Rickmansworth to Casselberry (Florida) | 4,314.36 mi (6,943.28 km) |
| Rickmansworth to Castaic (California) | 5,411.41 mi (8,708.83 km) |
| Rickmansworth to Castle Pines (Colorado) | 4,678.88 mi (7,529.93 km) |
