| East Islip to Castle Pines (Colorado) | 1,667.84 mi (2,684.13 km) |
| East Islip to Castle Rock (Colorado) | 1,668.33 mi (2,684.92 km) |
| East Islip to Castro Valley (California) | 2,590.80 mi (4,169.48 km) |
| East Islip to Catalina Foothills (Arizona) | 2,154.60 mi (3,467.49 km) |
| East Islip to Cataño (Puerto Rico) | 1,595.63 mi (2,567.93 km) |
| East Islip to Cathedral City (California) | 2,401.41 mi (3,864.70 km) |
| East Islip to Catonsville (Maryland) | 213.54 mi (343.66 km) |
| East Islip to Cave Spring (Virginia) | 438.76 mi (706.12 km) |
| East Islip to Cayce (South Carolina) | 636.39 mi (1,024.16 km) |
| East Islip to Cayey (Puerto Rico) | 1,617.00 mi (2,602.31 km) |
| East Islip to Cedar City (Utah) | 2,128.63 mi (3,425.70 km) |
| East Islip to Cedar Falls (Iowa) | 1,000.61 mi (1,610.32 km) |
| East Islip to Cedar Hill (Texas) | 1,426.99 mi (2,296.52 km) |
| East Islip to Cedar Lake (Indiana) | 743.13 mi (1,195.95 km) |
| East Islip to Cedar Mill (Oregon) | 2,483.51 mi (3,996.82 km) |
