| Mlada Boleslav to Joliet (Illinois) | 4,576.05 mi (7,364.44 km) |
| Mlada Boleslav to Jonesboro (Arkansas) | 4,961.39 mi (7,984.58 km) |
| Mlada Boleslav to Joplin (Missouri) | 5,030.15 mi (8,095.24 km) |
| Mlada Boleslav to Joppatowne (Maryland) | 4,242.95 mi (6,828.37 km) |
| Mlada Boleslav to Juana Díaz (Puerto Rico) | 4,889.85 mi (7,869.45 km) |
| Mlada Boleslav to Junction City (Kansas) | 5,004.76 mi (8,054.38 km) |
| Mlada Boleslav to Juneau (Alaska) | 4,714.76 mi (7,587.67 km) |
| Mlada Boleslav to Jupiter (Florida) | 5,015.44 mi (8,071.57 km) |
| Mlada Boleslav to Jupiter Farms (Florida) | 5,019.67 mi (8,078.38 km) |
| Mlada Boleslav to Jurupa Valley (California) | 5,921.65 mi (9,529.98 km) |
| Mlada Boleslav to Justice (Illinois) | 4,553.29 mi (7,327.81 km) |
| Mlada Boleslav to Kahului (Hawaii) | 7,483.37 mi (12,043.32 km) |
| Mlada Boleslav to Kailua (Hawaii) | 7,455.25 mi (11,998.07 km) |
| Mlada Boleslav to Kalamazoo (Michigan) | 4,447.61 mi (7,157.74 km) |
| Mlada Boleslav to Kalispell (Montana) | 4,986.93 mi (8,025.69 km) |
