| Greenock to Caguas (Puerto Rico) | 4,077.50 mi (6,562.10 km) |
| Greenock to Cahokia (Illinois) | 3,905.74 mi (6,285.69 km) |
| Greenock to Calabasas (California) | 5,106.55 mi (8,218.21 km) |
| Greenock to Caldwell (Idaho) | 4,499.13 mi (7,240.65 km) |
| Greenock to Caledonia (Wisconsin) | 3,610.15 mi (5,809.97 km) |
| Greenock to Calera (Alabama) | 4,061.87 mi (6,536.95 km) |
| Greenock to Calexico (California) | 5,092.33 mi (8,195.32 km) |
| Greenock to Calhoun (Georgia) | 3,922.68 mi (6,312.94 km) |
| Greenock to California (Maryland) | 3,410.77 mi (5,489.11 km) |
| Greenock to California City (California) | 5,022.77 mi (8,083.36 km) |
| Greenock to Callaway (Florida) | 4,175.46 mi (6,719.76 km) |
| Greenock to Calumet City (Illinois) | 3,657.00 mi (5,885.37 km) |
| Greenock to Calverton (Maryland) | 3,390.60 mi (5,456.64 km) |
| Greenock to Camano (Washington) | 4,397.25 mi (7,076.70 km) |
| Greenock to Camarillo (California) | 5,112.59 mi (8,227.93 km) |
