| Mackworth to Carson (California) | 5,343.69 mi (8,599.85 km) |
| Mackworth to Carson City (Nevada) | 5,083.49 mi (8,181.09 km) |
| Mackworth to Carteret (New Jersey) | 3,389.63 mi (5,455.07 km) |
| Mackworth to Cartersville (Georgia) | 4,115.49 mi (6,623.24 km) |
| Mackworth to Carthage (Missouri) | 4,332.83 mi (6,973.02 km) |
| Mackworth to Cary (Illinois) | 3,857.29 mi (6,207.71 km) |
| Mackworth to Cary (North Carolina) | 3,797.21 mi (6,111.02 km) |
| Mackworth to Casa de Oro-Mount Helix (California) | 5,364.18 mi (8,632.82 km) |
| Mackworth to Casa Grande (Arizona) | 5,183.30 mi (8,341.71 km) |
| Mackworth to Casas Adobes (Arizona) | 5,189.23 mi (8,351.27 km) |
| Mackworth to Cascades (Virginia) | 3,585.77 mi (5,770.73 km) |
| Mackworth to Casper (Wyoming) | 4,459.84 mi (7,177.43 km) |
| Mackworth to Casselberry (Florida) | 4,252.16 mi (6,843.19 km) |
| Mackworth to Castaic (California) | 5,318.39 mi (8,559.13 km) |
| Mackworth to Castle Pines (Colorado) | 4,590.26 mi (7,387.31 km) |
