| Mackworth to Cloverly (Maryland) | 3,567.52 mi (5,741.38 km) |
| Mackworth to Clovis (California) | 5,215.47 mi (8,393.49 km) |
| Mackworth to Clovis (New Mexico) | 4,799.62 mi (7,724.24 km) |
| Mackworth to Clute (Texas) | 4,795.91 mi (7,718.28 km) |
| Mackworth to Coachella (California) | 5,284.42 mi (8,504.45 km) |
| Mackworth to Coalinga (California) | 5,274.62 mi (8,488.68 km) |
| Mackworth to Coamo (Puerto Rico) | 4,185.11 mi (6,735.29 km) |
| Mackworth to Coatesville (Pennsylvania) | 3,480.24 mi (5,600.90 km) |
| Mackworth to Cockeysville (Maryland) | 3,535.55 mi (5,689.92 km) |
| Mackworth to Cocoa (Florida) | 4,243.76 mi (6,829.68 km) |
| Mackworth to Cocoa Beach (Florida) | 4,240.53 mi (6,824.48 km) |
| Mackworth to Coconut Creek (Florida) | 4,327.59 mi (6,964.59 km) |
| Mackworth to Coeur d'Alene (Idaho) | 4,515.21 mi (7,266.53 km) |
| Mackworth to Cohoes (New York) | 3,272.61 mi (5,266.76 km) |
| Mackworth to Cold Springs (Nevada) | 5,059.13 mi (8,141.88 km) |
