| Castelo Branco to Fortuna Foothills (Arizona) | 5,591.80 mi (8,999.13 km) |
| Castelo Branco to Foster City (California) | 5,681.46 mi (9,143.43 km) |
| Castelo Branco to Fostoria (Ohio) | 3,854.83 mi (6,203.75 km) |
| Castelo Branco to Fountain (Colorado) | 4,906.75 mi (7,896.65 km) |
| Castelo Branco to Fountain Hills (Arizona) | 5,433.12 mi (8,743.76 km) |
| Castelo Branco to Fountain Inn (South Carolina) | 4,001.67 mi (6,440.07 km) |
| Castelo Branco to Fountain Valley (California) | 5,693.80 mi (9,163.29 km) |
| Castelo Branco to Fountainebleau (Florida) | 4,225.49 mi (6,800.26 km) |
| Castelo Branco to Four Corners (Oregon) | 5,347.02 mi (8,605.20 km) |
| Castelo Branco to Four Corners (Texas) | 4,851.75 mi (7,808.13 km) |
| Castelo Branco to Four Square Mile (Colorado) | 4,875.11 mi (7,845.73 km) |
| Castelo Branco to Fox Crossing (Wisconsin) | 3,993.32 mi (6,426.63 km) |
| Castelo Branco to Fox Lake (Illinois) | 4,036.12 mi (6,495.51 km) |
| Castelo Branco to Framingham (Massachusetts) | 3,254.98 mi (5,238.38 km) |
| Castelo Branco to Franconia (Virginia) | 3,625.54 mi (5,834.74 km) |
