| Williamsport to Fortuna (California) | 2,429.14 mi (3,909.33 km) |
| Williamsport to Fortuna Foothills (Arizona) | 2,128.29 mi (3,425.14 km) |
| Williamsport to Foster City (California) | 2,401.01 mi (3,864.05 km) |
| Williamsport to Fostoria (Ohio) | 331.39 mi (533.33 km) |
| Williamsport to Fountain (Colorado) | 1,468.33 mi (2,363.05 km) |
| Williamsport to Fountain Hills (Arizona) | 1,961.51 mi (3,156.75 km) |
| Williamsport to Fountain Inn (South Carolina) | 532.06 mi (856.27 km) |
| Williamsport to Fountain Valley (California) | 2,280.90 mi (3,670.76 km) |
| Williamsport to Fountainebleau (Florida) | 1,085.34 mi (1,746.69 km) |
| Williamsport to Four Corners (Oregon) | 2,300.87 mi (3,702.89 km) |
| Williamsport to Four Corners (Texas) | 1,313.31 mi (2,113.58 km) |
| Williamsport to Four Square Mile (Colorado) | 1,461.81 mi (2,352.56 km) |
| Williamsport to Fox Crossing (Wisconsin) | 615.43 mi (990.43 km) |
| Williamsport to Fox Lake (Illinois) | 579.26 mi (932.22 km) |
| Williamsport to Framingham (Massachusetts) | 297.80 mi (479.26 km) |
