| Royston to Cloverly (Maryland) | 3,646.68 mi (5,868.77 km) |
| Royston to Clovis (California) | 5,303.65 mi (8,535.40 km) |
| Royston to Clovis (New Mexico) | 4,885.68 mi (7,862.74 km) |
| Royston to Clute (Texas) | 4,877.86 mi (7,850.15 km) |
| Royston to Coachella (California) | 5,372.37 mi (8,646.00 km) |
| Royston to Coalinga (California) | 5,362.80 mi (8,630.59 km) |
| Royston to Coamo (Puerto Rico) | 4,239.76 mi (6,823.24 km) |
| Royston to Coatesville (Pennsylvania) | 3,559.45 mi (5,728.39 km) |
| Royston to Cockeysville (Maryland) | 3,614.79 mi (5,817.44 km) |
| Royston to Cocoa (Florida) | 4,318.01 mi (6,949.17 km) |
| Royston to Cocoa Beach (Florida) | 4,314.66 mi (6,943.78 km) |
| Royston to Coconut Creek (Florida) | 4,400.11 mi (7,081.29 km) |
| Royston to Coeur d'Alene (Idaho) | 4,603.07 mi (7,407.92 km) |
| Royston to Cohoes (New York) | 3,352.82 mi (5,395.83 km) |
| Royston to Cold Springs (Nevada) | 5,147.25 mi (8,283.70 km) |
