| Castle Rock to Felida (Washington) | 1,005.96 mi (1,618.93 km) |
| Castle Rock to Fenton (Michigan) | 1,122.77 mi (1,806.93 km) |
| Castle Rock to Fergus Falls (Minnesota) | 651.67 mi (1,048.75 km) |
| Castle Rock to Ferguson (Missouri) | 781.39 mi (1,257.52 km) |
| Castle Rock to Fernandina Beach (Florida) | 1,449.17 mi (2,332.21 km) |
| Castle Rock to Ferndale (Maryland) | 1,503.12 mi (2,419.04 km) |
| Castle Rock to Ferndale (Michigan) | 1,150.63 mi (1,851.76 km) |
| Castle Rock to Ferndale (Washington) | 1,092.24 mi (1,757.79 km) |
| Castle Rock to Fernley (Nevada) | 764.00 mi (1,229.54 km) |
| Castle Rock to Ferry Pass (Florida) | 1,169.43 mi (1,882.01 km) |
| Castle Rock to Festus (Missouri) | 781.03 mi (1,256.95 km) |
| Castle Rock to Fife (Washington) | 1,030.28 mi (1,658.07 km) |
| Castle Rock to Fillmore (California) | 848.64 mi (1,365.75 km) |
| Castle Rock to Findlay (Ohio) | 1,122.56 mi (1,806.59 km) |
| Castle Rock to Finneytown (Ohio) | 1,085.28 mi (1,746.60 km) |
