| Mackworth to Cicero (Illinois) | 3,856.47 mi (6,206.38 km) |
| Mackworth to Cimarron Hills (Colorado) | 4,616.43 mi (7,429.42 km) |
| Mackworth to Cincinnati (Ohio) | 3,861.16 mi (6,213.94 km) |
| Mackworth to Cinco Ranch (Texas) | 4,772.20 mi (7,680.12 km) |
| Mackworth to Circleville (Ohio) | 3,778.06 mi (6,080.20 km) |
| Mackworth to Citrus (California) | 5,316.03 mi (8,555.33 km) |
| Mackworth to Citrus Heights (California) | 5,155.26 mi (8,296.59 km) |
| Mackworth to Citrus Park (Florida) | 4,333.04 mi (6,973.35 km) |
| Mackworth to Claiborne (Louisiana) | 4,488.16 mi (7,223.00 km) |
| Mackworth to Claremont (California) | 5,309.95 mi (8,545.53 km) |
| Mackworth to Claremont (New Hampshire) | 3,192.38 mi (5,137.65 km) |
| Mackworth to Claremore (Oklahoma) | 4,423.51 mi (7,118.95 km) |
| Mackworth to Clarksburg (Maryland) | 3,572.69 mi (5,749.69 km) |
| Mackworth to Clarksburg (West Virginia) | 3,690.94 mi (5,940.00 km) |
| Mackworth to Clarksdale (Mississippi) | 4,340.30 mi (6,985.04 km) |
