| Manassas to Johnstown (Pennsylvania) | 133.19 mi (214.35 km) |
| Manassas to Joliet (Illinois) | 594.59 mi (956.90 km) |
| Manassas to Jonesboro (Arkansas) | 752.27 mi (1,210.66 km) |
| Manassas to Joplin (Missouri) | 933.47 mi (1,502.28 km) |
| Manassas to Joppatowne (Maryland) | 76.36 mi (122.89 km) |
| Manassas to Juana Díaz (Puerto Rico) | 1,574.91 mi (2,534.57 km) |
| Manassas to Junction City (Kansas) | 1,039.78 mi (1,673.36 km) |
| Manassas to Juneau (Alaska) | 2,816.07 mi (4,532.03 km) |
| Manassas to Jupiter (Florida) | 831.25 mi (1,337.76 km) |
| Manassas to Jupiter Farms (Florida) | 832.24 mi (1,339.36 km) |
| Manassas to Jurupa Valley (California) | 2,230.70 mi (3,589.97 km) |
| Manassas to Justice (Illinois) | 583.44 mi (938.96 km) |
| Manassas to Kahului (Hawaii) | 4,750.62 mi (7,645.38 km) |
| Manassas to Kailua (Hawaii) | 4,797.80 mi (7,721.31 km) |
| Manassas to Kalamazoo (Michigan) | 490.22 mi (788.93 km) |
