| Mason City to Fortuna (California) | 1,592.75 mi (2,563.28 km) |
| Mason City to Fortuna Foothills (Arizona) | 1,358.00 mi (2,185.50 km) |
| Mason City to Foster City (California) | 1,569.87 mi (2,526.47 km) |
| Mason City to Fostoria (Ohio) | 519.48 mi (836.02 km) |
| Mason City to Fountain (Colorado) | 673.27 mi (1,083.53 km) |
| Mason City to Fountain Hills (Arizona) | 1,197.04 mi (1,926.46 km) |
| Mason City to Fountain Inn (South Carolina) | 829.53 mi (1,335.00 km) |
| Mason City to Fountain Valley (California) | 1,482.37 mi (2,385.65 km) |
| Mason City to Fountainebleau (Florida) | 1,402.47 mi (2,257.06 km) |
| Mason City to Four Corners (Oregon) | 1,475.59 mi (2,374.73 km) |
| Mason City to Four Corners (Texas) | 941.12 mi (1,514.59 km) |
| Mason City to Four Square Mile (Colorado) | 650.60 mi (1,047.04 km) |
| Mason City to Fox Crossing (Wisconsin) | 247.35 mi (398.07 km) |
| Mason City to Fox Lake (Illinois) | 259.15 mi (417.07 km) |
| Mason City to Framingham (Massachusetts) | 1,102.98 mi (1,775.07 km) |
