| East Islip to Cibolo (Texas) | 1,602.28 mi (2,578.62 km) |
| East Islip to Cicero (Illinois) | 759.60 mi (1,222.46 km) |
| East Islip to Cimarron Hills (Colorado) | 1,668.95 mi (2,685.91 km) |
| East Islip to Cincinnati (Ohio) | 609.14 mi (980.32 km) |
| East Islip to Cinco Ranch (Texas) | 1,476.39 mi (2,376.02 km) |
| East Islip to Circleville (Ohio) | 520.11 mi (837.04 km) |
| East Islip to Citrus (California) | 2,467.97 mi (3,971.81 km) |
| East Islip to Citrus Heights (California) | 2,528.33 mi (4,068.95 km) |
| East Islip to Citrus Park (Florida) | 1,023.21 mi (1,646.70 km) |
| East Islip to Claiborne (Louisiana) | 1,192.68 mi (1,919.43 km) |
| East Islip to Claremont (California) | 2,458.61 mi (3,956.75 km) |
| East Islip to Claremont (New Hampshire) | 188.44 mi (303.26 km) |
| East Islip to Claremore (Oklahoma) | 1,246.07 mi (2,005.35 km) |
| East Islip to Clarksburg (Maryland) | 239.55 mi (385.52 km) |
| East Islip to Clarksburg (West Virginia) | 390.43 mi (628.34 km) |
