| Greenock to Cloverly (Maryland) | 3,390.14 mi (5,455.90 km) |
| Greenock to Clovis (California) | 4,979.72 mi (8,014.08 km) |
| Greenock to Clovis (New Mexico) | 4,585.52 mi (7,379.69 km) |
| Greenock to Clute (Texas) | 4,603.94 mi (7,409.33 km) |
| Greenock to Coachella (California) | 5,054.53 mi (8,134.48 km) |
| Greenock to Coalinga (California) | 5,038.79 mi (8,109.14 km) |
| Greenock to Coamo (Puerto Rico) | 4,098.52 mi (6,595.93 km) |
| Greenock to Coatesville (Pennsylvania) | 3,302.78 mi (5,315.31 km) |
| Greenock to Cockeysville (Maryland) | 3,357.88 mi (5,403.98 km) |
| Greenock to Cocoa (Florida) | 4,085.90 mi (6,575.62 km) |
| Greenock to Cocoa Beach (Florida) | 4,083.15 mi (6,571.19 km) |
| Greenock to Coconut Creek (Florida) | 4,176.44 mi (6,721.33 km) |
| Greenock to Coeur d'Alene (Idaho) | 4,274.54 mi (6,879.20 km) |
| Greenock to Cohoes (New York) | 3,091.05 mi (4,974.57 km) |
| Greenock to Cold Springs (Nevada) | 4,821.27 mi (7,759.09 km) |
