| River Forest to Fortuna (California) | 1,875.15 mi (3,017.76 km) |
| River Forest to Fortuna Foothills (Arizona) | 1,585.94 mi (2,552.33 km) |
| River Forest to Foster City (California) | 1,842.25 mi (2,964.81 km) |
| River Forest to Fostoria (Ohio) | 233.53 mi (375.83 km) |
| River Forest to Fountain (Colorado) | 914.27 mi (1,471.37 km) |
| River Forest to Fountain Hills (Arizona) | 1,420.51 mi (2,286.09 km) |
| River Forest to Fountain Inn (South Carolina) | 582.81 mi (937.94 km) |
| River Forest to Fountain Valley (California) | 1,728.88 mi (2,782.37 km) |
| River Forest to Fountainebleau (Florida) | 1,192.46 mi (1,919.08 km) |
| River Forest to Four Corners (Oregon) | 1,762.86 mi (2,837.05 km) |
| River Forest to Four Corners (Texas) | 951.07 mi (1,530.60 km) |
| River Forest to Four Square Mile (Colorado) | 904.35 mi (1,455.40 km) |
| River Forest to Fox Crossing (Wisconsin) | 164.22 mi (264.28 km) |
| River Forest to Fox Lake (Illinois) | 41.05 mi (66.06 km) |
| River Forest to Framingham (Massachusetts) | 839.03 mi (1,350.29 km) |
