| Greenock to Carson (California) | 5,111.47 mi (8,226.11 km) |
| Greenock to Carson City (Nevada) | 4,846.15 mi (7,799.13 km) |
| Greenock to Carteret (New Jersey) | 3,213.66 mi (5,171.89 km) |
| Greenock to Cartersville (Georgia) | 3,934.48 mi (6,331.94 km) |
| Greenock to Carthage (Missouri) | 4,128.14 mi (6,643.60 km) |
| Greenock to Cary (Illinois) | 3,652.35 mi (5,877.88 km) |
| Greenock to Cary (North Carolina) | 3,625.00 mi (5,833.88 km) |
| Greenock to Casa de Oro-Mount Helix (California) | 5,134.19 mi (8,262.69 km) |
| Greenock to Casa Grande (Arizona) | 4,959.32 mi (7,981.26 km) |
| Greenock to Casas Adobes (Arizona) | 4,966.84 mi (7,993.36 km) |
| Greenock to Cascades (Virginia) | 3,407.75 mi (5,484.25 km) |
| Greenock to Casper (Wyoming) | 4,231.22 mi (6,809.49 km) |
| Greenock to Casselberry (Florida) | 4,092.22 mi (6,585.79 km) |
| Greenock to Castaic (California) | 5,085.30 mi (8,183.99 km) |
| Greenock to Castle Pines (Colorado) | 4,367.24 mi (7,028.40 km) |
