| Greenock to Cookeville (Tennessee) | 3,858.44 mi (6,209.56 km) |
| Greenock to Coolidge (Arizona) | 4,949.89 mi (7,966.08 km) |
| Greenock to Coon Rapids (Minnesota) | 3,682.35 mi (5,926.17 km) |
| Greenock to Cooper City (Florida) | 4,193.03 mi (6,748.03 km) |
| Greenock to Coos Bay (Oregon) | 4,722.83 mi (7,600.67 km) |
| Greenock to Copiague (New York) | 3,177.83 mi (5,114.23 km) |
| Greenock to Coppell (Texas) | 4,447.43 mi (7,157.45 km) |
| Greenock to Copperas Cove (Texas) | 4,581.18 mi (7,372.70 km) |
| Greenock to Coral Gables (Florida) | 4,211.02 mi (6,776.98 km) |
| Greenock to Coral Springs (Florida) | 4,179.88 mi (6,726.86 km) |
| Greenock to Coral Terrace (Florida) | 4,210.00 mi (6,775.33 km) |
| Greenock to Coralville (Iowa) | 3,796.77 mi (6,110.32 km) |
| Greenock to Coram (New York) | 3,153.16 mi (5,074.51 km) |
| Greenock to Corcoran (California) | 5,019.59 mi (8,078.25 km) |
| Greenock to Cordele (Georgia) | 4,011.06 mi (6,455.17 km) |
