| Klamath Falls to Johnstown (Pennsylvania) | 2,205.78 mi (3,549.87 km) |
| Klamath Falls to Joliet (Illinois) | 1,719.48 mi (2,767.24 km) |
| Klamath Falls to Jonesboro (Arkansas) | 1,716.31 mi (2,762.14 km) |
| Klamath Falls to Joplin (Missouri) | 1,486.93 mi (2,392.98 km) |
| Klamath Falls to Joppatowne (Maryland) | 2,354.87 mi (3,789.80 km) |
| Klamath Falls to Juana Díaz (Puerto Rico) | 3,624.33 mi (5,832.79 km) |
| Klamath Falls to Junction City (Kansas) | 1,320.68 mi (2,125.43 km) |
| Klamath Falls to Juneau (Alaska) | 1,243.30 mi (2,000.89 km) |
| Klamath Falls to Jupiter (Florida) | 2,563.62 mi (4,125.75 km) |
| Klamath Falls to Jupiter Farms (Florida) | 2,558.20 mi (4,117.02 km) |
| Klamath Falls to Jurupa Valley (California) | 613.95 mi (988.06 km) |
| Klamath Falls to Justice (Illinois) | 1,731.85 mi (2,787.14 km) |
| Klamath Falls to Kahului (Hawaii) | 2,491.39 mi (4,009.51 km) |
| Klamath Falls to Kailua (Hawaii) | 2,526.17 mi (4,065.49 km) |
| Klamath Falls to Kalamazoo (Michigan) | 1,836.67 mi (2,955.83 km) |
