| Iselin to Joliet (Illinois) | 723.02 mi (1,163.59 km) |
| Iselin to Jonesboro (Arkansas) | 945.34 mi (1,521.37 km) |
| Iselin to Joplin (Missouri) | 1,110.38 mi (1,786.98 km) |
| Iselin to Joppatowne (Maryland) | 133.89 mi (215.47 km) |
| Iselin to Juana Díaz (Puerto Rico) | 1,623.64 mi (2,613.00 km) |
| Iselin to Junction City (Kansas) | 1,197.63 mi (1,927.40 km) |
| Iselin to Juneau (Alaska) | 2,838.13 mi (4,567.53 km) |
| Iselin to Jupiter (Florida) | 999.53 mi (1,608.58 km) |
| Iselin to Jupiter Farms (Florida) | 1,001.41 mi (1,611.61 km) |
| Iselin to Jurupa Valley (California) | 2,390.84 mi (3,847.69 km) |
| Iselin to Justice (Illinois) | 707.12 mi (1,138.00 km) |
| Iselin to Kahului (Hawaii) | 4,892.36 mi (7,873.48 km) |
| Iselin to Kailua (Hawaii) | 4,936.27 mi (7,944.15 km) |
| Iselin to Kalamazoo (Michigan) | 595.24 mi (957.95 km) |
| Iselin to Kalispell (Montana) | 2,019.86 mi (3,250.65 km) |
