| Lockport to Johnstown (Pennsylvania) | 483.06 mi (777.41 km) |
| Lockport to Joliet (Illinois) | 7.97 mi (12.82 km) |
| Lockport to Jonesboro (Arkansas) | 423.40 mi (681.39 km) |
| Lockport to Joplin (Missouri) | 465.54 mi (749.21 km) |
| Lockport to Joppatowne (Maryland) | 631.04 mi (1,015.56 km) |
| Lockport to Juana Díaz (Puerto Rico) | 2,063.42 mi (3,320.76 km) |
| Lockport to Junction City (Kansas) | 497.08 mi (799.98 km) |
| Lockport to Juneau (Alaska) | 2,293.57 mi (3,691.15 km) |
| Lockport to Jupiter (Florida) | 1,108.64 mi (1,784.18 km) |
| Lockport to Jupiter Farms (Florida) | 1,106.07 mi (1,780.05 km) |
| Lockport to Jurupa Valley (California) | 1,681.23 mi (2,705.68 km) |
| Lockport to Justice (Illinois) | 14.89 mi (23.96 km) |
| Lockport to Kahului (Hawaii) | 4,175.70 mi (6,720.14 km) |
| Lockport to Kailua (Hawaii) | 4,220.15 mi (6,791.68 km) |
| Lockport to Kalamazoo (Michigan) | 134.08 mi (215.78 km) |
