| Gourock to Caguas (Puerto Rico) | 4,075.60 mi (6,559.04 km) |
| Gourock to Cahokia (Illinois) | 3,903.76 mi (6,282.49 km) |
| Gourock to Calabasas (California) | 5,104.80 mi (8,215.38 km) |
| Gourock to Caldwell (Idaho) | 4,497.45 mi (7,237.95 km) |
| Gourock to Caledonia (Wisconsin) | 3,608.18 mi (5,806.81 km) |
| Gourock to Calera (Alabama) | 4,059.84 mi (6,533.69 km) |
| Gourock to Calexico (California) | 5,090.52 mi (8,192.40 km) |
| Gourock to Calhoun (Georgia) | 3,920.65 mi (6,309.68 km) |
| Gourock to California (Maryland) | 3,408.74 mi (5,485.83 km) |
| Gourock to California City (California) | 5,021.01 mi (8,080.54 km) |
| Gourock to Callaway (Florida) | 4,173.43 mi (6,716.48 km) |
| Gourock to Calumet City (Illinois) | 3,655.02 mi (5,882.19 km) |
| Gourock to Calverton (Maryland) | 3,388.57 mi (5,453.37 km) |
| Gourock to Camano (Washington) | 4,395.72 mi (7,074.23 km) |
| Gourock to Camarillo (California) | 5,110.84 mi (8,225.11 km) |
