| Hard to Joliet (Illinois) | 4,504.16 mi (7,248.75 km) |
| Hard to Jonesboro (Arkansas) | 4,875.29 mi (7,846.02 km) |
| Hard to Joplin (Missouri) | 4,961.34 mi (7,984.50 km) |
| Hard to Joppatowne (Maryland) | 4,126.79 mi (6,641.43 km) |
| Hard to Juana Díaz (Puerto Rico) | 4,667.79 mi (7,512.08 km) |
| Hard to Junction City (Kansas) | 4,950.90 mi (7,967.71 km) |
| Hard to Juneau (Alaska) | 4,833.64 mi (7,779.00 km) |
| Hard to Jupiter (Florida) | 4,862.64 mi (7,825.66 km) |
| Hard to Jupiter Farms (Florida) | 4,867.22 mi (7,833.04 km) |
| Hard to Jurupa Valley (California) | 5,925.85 mi (9,536.74 km) |
| Hard to Justice (Illinois) | 4,481.38 mi (7,212.09 km) |
| Hard to Kahului (Hawaii) | 7,635.65 mi (12,288.39 km) |
| Hard to Kailua (Hawaii) | 7,613.76 mi (12,253.16 km) |
| Hard to Kalamazoo (Michigan) | 4,371.13 mi (7,034.66 km) |
| Hard to Kalispell (Montana) | 5,021.47 mi (8,081.28 km) |
