| Round Lake Beach to Fortuna (California) | 1,856.66 mi (2,988.00 km) |
| Round Lake Beach to Fortuna Foothills (Arizona) | 1,582.10 mi (2,546.14 km) |
| Round Lake Beach to Foster City (California) | 1,827.90 mi (2,941.72 km) |
| Round Lake Beach to Fostoria (Ohio) | 254.88 mi (410.19 km) |
| Round Lake Beach to Fountain (Colorado) | 906.62 mi (1,459.07 km) |
| Round Lake Beach to Fountain Hills (Arizona) | 1,417.29 mi (2,280.90 km) |
| Round Lake Beach to Fountain Inn (South Carolina) | 618.16 mi (994.83 km) |
| Round Lake Beach to Fountain Valley (California) | 1,721.36 mi (2,770.26 km) |
| Round Lake Beach to Fountainebleau (Florida) | 1,228.48 mi (1,977.05 km) |
| Round Lake Beach to Four Corners (Oregon) | 1,739.61 mi (2,799.63 km) |
| Round Lake Beach to Four Corners (Texas) | 973.84 mi (1,567.25 km) |
| Round Lake Beach to Four Square Mile (Colorado) | 894.03 mi (1,438.81 km) |
| Round Lake Beach to Fox Crossing (Wisconsin) | 128.93 mi (207.49 km) |
| Round Lake Beach to Fox Lake (Illinois) | 6.11 mi (9.84 km) |
| Round Lake Beach to Framingham (Massachusetts) | 848.64 mi (1,365.76 km) |
