| Johnston to Joliet (Illinois) | 288.14 mi (463.72 km) |
| Johnston to Jonesboro (Arkansas) | 437.40 mi (703.92 km) |
| Johnston to Joplin (Missouri) | 321.58 mi (517.53 km) |
| Johnston to Joppatowne (Maryland) | 923.73 mi (1,486.59 km) |
| Johnston to Juana Díaz (Puerto Rico) | 2,288.73 mi (3,683.35 km) |
| Johnston to Junction City (Kansas) | 246.89 mi (397.33 km) |
| Johnston to Juneau (Alaska) | 2,087.85 mi (3,360.07 km) |
| Johnston to Jupiter (Florida) | 1,279.09 mi (2,058.49 km) |
| Johnston to Jupiter Farms (Florida) | 1,275.35 mi (2,052.48 km) |
| Johnston to Jurupa Valley (California) | 1,394.57 mi (2,244.34 km) |
| Johnston to Justice (Illinois) | 303.67 mi (488.70 km) |
| Johnston to Kahului (Hawaii) | 3,881.68 mi (6,246.96 km) |
| Johnston to Kailua (Hawaii) | 3,926.13 mi (6,318.49 km) |
| Johnston to Kalamazoo (Michigan) | 419.61 mi (675.29 km) |
| Johnston to Kalispell (Montana) | 1,099.24 mi (1,769.05 km) |
