| Klamath Falls to Fortuna (California) | 166.65 mi (268.20 km) |
| Klamath Falls to Fortuna Foothills (Arizona) | 773.82 mi (1,245.35 km) |
| Klamath Falls to Foster City (California) | 323.31 mi (520.32 km) |
| Klamath Falls to Fostoria (Ohio) | 1,963.93 mi (3,160.64 km) |
| Klamath Falls to Fountain (Colorado) | 929.37 mi (1,495.67 km) |
| Klamath Falls to Fountain Hills (Arizona) | 807.13 mi (1,298.95 km) |
| Klamath Falls to Fountain Inn (South Carolina) | 2,182.49 mi (3,512.38 km) |
| Klamath Falls to Fountain Valley (California) | 623.54 mi (1,003.49 km) |
| Klamath Falls to Fountainebleau (Florida) | 2,598.48 mi (4,181.85 km) |
| Klamath Falls to Four Corners (Oregon) | 196.57 mi (316.35 km) |
| Klamath Falls to Four Corners (Texas) | 1,688.44 mi (2,717.29 km) |
| Klamath Falls to Four Square Mile (Colorado) | 896.97 mi (1,443.54 km) |
| Klamath Falls to Fox Crossing (Wisconsin) | 1,670.78 mi (2,688.85 km) |
| Klamath Falls to Fox Lake (Illinois) | 1,704.75 mi (2,743.53 km) |
| Klamath Falls to Framingham (Massachusetts) | 2,535.06 mi (4,079.79 km) |
