| Rhondda to Fortuna Foothills (Arizona) | 5,275.76 mi (8,490.52 km) |
| Rhondda to Foster City (California) | 5,257.79 mi (8,461.60 km) |
| Rhondda to Fostoria (Ohio) | 3,685.10 mi (5,930.60 km) |
| Rhondda to Fountain (Colorado) | 4,609.57 mi (7,418.39 km) |
| Rhondda to Fountain Hills (Arizona) | 5,130.76 mi (8,257.17 km) |
| Rhondda to Fountain Inn (South Carolina) | 3,934.10 mi (6,331.33 km) |
| Rhondda to Fountain Valley (California) | 5,337.99 mi (8,590.66 km) |
| Rhondda to Fountainebleau (Florida) | 4,293.58 mi (6,909.84 km) |
| Rhondda to Four Corners (Oregon) | 4,858.73 mi (7,819.38 km) |
| Rhondda to Four Corners (Texas) | 4,731.13 mi (7,614.02 km) |
| Rhondda to Four Square Mile (Colorado) | 4,565.63 mi (7,347.67 km) |
| Rhondda to Fox Crossing (Wisconsin) | 3,744.48 mi (6,026.16 km) |
| Rhondda to Fox Lake (Illinois) | 3,814.45 mi (6,138.77 km) |
| Rhondda to Framingham (Massachusetts) | 3,151.49 mi (5,071.83 km) |
| Rhondda to Franconia (Virginia) | 3,538.72 mi (5,695.02 km) |
