| Irthlingborough to Florence (South Carolina) | 3,962.14 mi (6,376.44 km) |
| Irthlingborough to Florence-Graham (California) | 5,392.39 mi (8,678.21 km) |
| Irthlingborough to Florham Park (New Jersey) | 3,436.99 mi (5,531.29 km) |
| Irthlingborough to Florida (Puerto Rico) | 4,210.27 mi (6,775.77 km) |
| Irthlingborough to Florida City (Florida) | 4,426.97 mi (7,124.52 km) |
| Irthlingborough to Florida Ridge (Florida) | 4,314.28 mi (6,943.16 km) |
| Irthlingborough to Florin (California) | 5,227.85 mi (8,413.41 km) |
| Irthlingborough to Florissant (Missouri) | 4,153.24 mi (6,684.00 km) |
| Irthlingborough to Flower Hill (Maryland) | 3,621.40 mi (5,828.09 km) |
| Irthlingborough to Flower Mound (Texas) | 4,703.25 mi (7,569.14 km) |
| Irthlingborough to Flowing Wells (Arizona) | 5,247.55 mi (8,445.12 km) |
| Irthlingborough to Foley (Alabama) | 4,469.20 mi (7,192.49 km) |
| Irthlingborough to Folsom (California) | 5,209.51 mi (8,383.89 km) |
| Irthlingborough to Fond du Lac (Wisconsin) | 3,844.88 mi (6,187.74 km) |
| Irthlingborough to Fontana (California) | 5,360.02 mi (8,626.12 km) |
