| Gourock to Castle Rock (Colorado) | 4,369.50 mi (7,032.03 km) |
| Gourock to Castro Valley (California) | 4,995.45 mi (8,039.39 km) |
| Gourock to Catalina Foothills (Arizona) | 4,962.91 mi (7,987.03 km) |
| Gourock to Cataño (Puerto Rico) | 4,067.91 mi (6,546.67 km) |
| Gourock to Cathedral City (California) | 5,054.34 mi (8,134.17 km) |
| Gourock to Catonsville (Maryland) | 3,370.64 mi (5,424.53 km) |
| Gourock to Cave Spring (Virginia) | 3,595.13 mi (5,785.80 km) |
| Gourock to Cayce (South Carolina) | 3,801.59 mi (6,118.07 km) |
| Gourock to Cayey (Puerto Rico) | 4,086.89 mi (6,577.21 km) |
| Gourock to Cedar City (Utah) | 4,728.43 mi (7,609.67 km) |
| Gourock to Cedar Falls (Iowa) | 3,783.51 mi (6,088.97 km) |
| Gourock to Cedar Hill (Texas) | 4,465.09 mi (7,185.87 km) |
| Gourock to Cedar Lake (Indiana) | 3,663.10 mi (5,895.20 km) |
| Gourock to Cedar Mill (Oregon) | 4,557.54 mi (7,334.66 km) |
| Gourock to Cedar Park (Texas) | 4,609.12 mi (7,417.67 km) |
