| Killingworth to Caño Martin Peña (Puerto Rico) | 4,176.58 mi (6,721.56 km) |
| Killingworth to Cañon City (Colorado) | 4,574.39 mi (7,361.76 km) |
| Killingworth to Canóvanas (Puerto Rico) | 4,174.17 mi (6,717.68 km) |
| Killingworth to Canton (Georgia) | 4,056.14 mi (6,527.73 km) |
| Killingworth to Canton (Illinois) | 3,939.45 mi (6,339.93 km) |
| Killingworth to Canton (Mississippi) | 4,351.42 mi (7,002.94 km) |
| Killingworth to Canton (Ohio) | 3,609.84 mi (5,809.48 km) |
| Killingworth to Canyon (Texas) | 4,651.88 mi (7,486.48 km) |
| Killingworth to Canyon Lake (California) | 5,227.53 mi (8,412.90 km) |
| Killingworth to Canyon Lake (Texas) | 4,802.13 mi (7,728.28 km) |
| Killingworth to Cape Coral (Florida) | 4,359.20 mi (7,015.45 km) |
| Killingworth to Cape Girardeau (Missouri) | 4,087.80 mi (6,578.68 km) |
| Killingworth to Carbondale (Illinois) | 4,054.36 mi (6,524.87 km) |
| Killingworth to Carlisle (Pennsylvania) | 3,482.20 mi (5,604.06 km) |
| Killingworth to Carlsbad (California) | 5,261.16 mi (8,467.03 km) |
