| East Islip to Firestone (Colorado) | 1,661.53 mi (2,673.97 km) |
| East Islip to Fish Hawk (Florida) | 1,026.71 mi (1,652.33 km) |
| East Islip to Fishers (Indiana) | 674.45 mi (1,085.43 km) |
| East Islip to Fitchburg (Massachusetts) | 147.05 mi (236.65 km) |
| East Islip to Fitchburg (Wisconsin) | 848.73 mi (1,365.91 km) |
| East Islip to Five Corners (Washington) | 2,470.83 mi (3,976.42 km) |
| East Islip to Five Forks (South Carolina) | 640.51 mi (1,030.80 km) |
| East Islip to Flagstaff (Arizona) | 2,111.15 mi (3,397.57 km) |
| East Islip to Flat Rock (Michigan) | 530.78 mi (854.21 km) |
| East Islip to Fleming Island (Florida) | 876.24 mi (1,410.17 km) |
| East Islip to Flint (Michigan) | 562.86 mi (905.84 km) |
| East Islip to Floral Park (New York) | 27.02 mi (43.48 km) |
| East Islip to Florence (Alabama) | 887.87 mi (1,428.88 km) |
| East Islip to Florence (Arizona) | 2,159.91 mi (3,476.05 km) |
| East Islip to Florence (Kentucky) | 619.07 mi (996.30 km) |
