| Irthlingborough to Fortuna Foothills (Arizona) | 5,341.77 mi (8,596.74 km) |
| Irthlingborough to Foster City (California) | 5,307.12 mi (8,540.99 km) |
| Irthlingborough to Fostoria (Ohio) | 3,775.75 mi (6,076.48 km) |
| Irthlingborough to Fountain (Colorado) | 4,680.54 mi (7,532.60 km) |
| Irthlingborough to Fountain Hills (Arizona) | 5,199.21 mi (8,367.32 km) |
| Irthlingborough to Fountain Inn (South Carolina) | 4,034.59 mi (6,493.05 km) |
| Irthlingborough to Fountain Valley (California) | 5,397.88 mi (8,687.05 km) |
| Irthlingborough to Fountainebleau (Florida) | 4,404.90 mi (7,089.01 km) |
| Irthlingborough to Four Corners (Oregon) | 4,898.09 mi (7,882.72 km) |
| Irthlingborough to Four Corners (Texas) | 4,823.61 mi (7,762.85 km) |
| Irthlingborough to Four Square Mile (Colorado) | 4,635.02 mi (7,459.34 km) |
| Irthlingborough to Fox Crossing (Wisconsin) | 3,825.31 mi (6,156.23 km) |
| Irthlingborough to Fox Lake (Illinois) | 3,898.41 mi (6,273.88 km) |
| Irthlingborough to Framingham (Massachusetts) | 3,251.49 mi (5,232.77 km) |
| Irthlingborough to Franconia (Virginia) | 3,638.74 mi (5,855.98 km) |
