| Klamath Falls to Frederick (Colorado) | 884.71 mi (1,423.80 km) |
| Klamath Falls to Frederick (Maryland) | 2,301.08 mi (3,703.23 km) |
| Klamath Falls to Fredericksburg (Texas) | 1,512.44 mi (2,434.04 km) |
| Klamath Falls to Fredericksburg (Virginia) | 2,324.50 mi (3,740.92 km) |
| Klamath Falls to Frederickson (Washington) | 337.85 mi (543.72 km) |
| Klamath Falls to Freeport (Illinois) | 1,633.81 mi (2,629.36 km) |
| Klamath Falls to Freeport (New York) | 2,464.94 mi (3,966.94 km) |
| Klamath Falls to Freeport (Texas) | 1,733.77 mi (2,790.23 km) |
| Klamath Falls to Fremont (California) | 324.44 mi (522.14 km) |
| Klamath Falls to Fremont (Nebraska) | 1,298.26 mi (2,089.35 km) |
| Klamath Falls to Fremont (Ohio) | 1,975.41 mi (3,179.11 km) |
| Klamath Falls to French Valley (California) | 647.38 mi (1,041.85 km) |
| Klamath Falls to Fresno (California) | 390.16 mi (627.91 km) |
| Klamath Falls to Fresno (Texas) | 1,703.17 mi (2,740.99 km) |
| Klamath Falls to Fridley (Minnesota) | 1,431.68 mi (2,304.06 km) |
