| Mackworth to Clarkston (Georgia) | 4,110.74 mi (6,615.59 km) |
| Mackworth to Clarksville (Indiana) | 3,949.38 mi (6,355.91 km) |
| Mackworth to Clarksville (Tennessee) | 4,096.08 mi (6,592.00 km) |
| Mackworth to Clawson (Michigan) | 3,650.10 mi (5,874.27 km) |
| Mackworth to Clay (Alabama) | 4,210.54 mi (6,776.20 km) |
| Mackworth to Clayton (California) | 5,217.93 mi (8,397.44 km) |
| Mackworth to Clayton (Missouri) | 4,108.11 mi (6,611.36 km) |
| Mackworth to Clayton (North Carolina) | 3,788.22 mi (6,096.56 km) |
| Mackworth to Clayton (Ohio) | 3,819.71 mi (6,147.23 km) |
| Mackworth to Clearfield (Utah) | 4,736.91 mi (7,623.33 km) |
| Mackworth to Clearlake (California) | 5,178.89 mi (8,334.61 km) |
| Mackworth to Clearwater (Florida) | 4,346.01 mi (6,994.22 km) |
| Mackworth to Cleburne (Texas) | 4,697.23 mi (7,559.47 km) |
| Mackworth to Clemmons (North Carolina) | 3,848.05 mi (6,192.83 km) |
| Mackworth to Clemson (South Carolina) | 4,010.67 mi (6,454.55 km) |
