| Middle Island to Johnstown (Pennsylvania) | 315.69 mi (508.05 km) |
| Middle Island to Joliet (Illinois) | 790.59 mi (1,272.34 km) |
| Middle Island to Jonesboro (Arkansas) | 1,020.35 mi (1,642.10 km) |
| Middle Island to Joplin (Missouri) | 1,184.07 mi (1,905.58 km) |
| Middle Island to Joppatowne (Maryland) | 206.47 mi (332.28 km) |
| Middle Island to Juana Díaz (Puerto Rico) | 1,623.24 mi (2,612.35 km) |
| Middle Island to Junction City (Kansas) | 1,268.60 mi (2,041.61 km) |
| Middle Island to Juneau (Alaska) | 2,871.88 mi (4,621.84 km) |
| Middle Island to Jupiter (Florida) | 1,047.85 mi (1,686.36 km) |
| Middle Island to Jupiter Farms (Florida) | 1,050.08 mi (1,689.95 km) |
| Middle Island to Jurupa Valley (California) | 2,461.27 mi (3,961.03 km) |
| Middle Island to Justice (Illinois) | 773.97 mi (1,245.59 km) |
| Middle Island to Kahului (Hawaii) | 4,958.19 mi (7,979.44 km) |
| Middle Island to Kailua (Hawaii) | 5,001.33 mi (8,048.87 km) |
| Middle Island to Kalamazoo (Michigan) | 659.81 mi (1,061.85 km) |
