| Irthlingborough to Fort Meade (Maryland) | 3,606.57 mi (5,804.21 km) |
| Irthlingborough to Fort Mill (South Carolina) | 3,968.74 mi (6,387.07 km) |
| Irthlingborough to Fort Mohave (Arizona) | 5,215.42 mi (8,393.41 km) |
| Irthlingborough to Fort Morgan (Colorado) | 4,567.23 mi (7,350.24 km) |
| Irthlingborough to Fort Myers (Florida) | 4,423.29 mi (7,118.59 km) |
| Irthlingborough to Fort Oglethorpe (Georgia) | 4,145.24 mi (6,671.11 km) |
| Irthlingborough to Fort Payne (Alabama) | 4,186.63 mi (6,737.73 km) |
| Irthlingborough to Fort Pierce (Florida) | 4,320.42 mi (6,953.04 km) |
| Irthlingborough to Fort Smith (Arkansas) | 4,479.48 mi (7,209.03 km) |
| Irthlingborough to Fort Thomas (Kentucky) | 3,913.52 mi (6,298.19 km) |
| Irthlingborough to Fort Walton Beach (Florida) | 4,425.77 mi (7,122.60 km) |
| Irthlingborough to Fort Washington (Maryland) | 3,634.20 mi (5,848.67 km) |
| Irthlingborough to Fort Wayne (Indiana) | 3,845.76 mi (6,189.15 km) |
| Irthlingborough to Fort Worth (Texas) | 4,725.28 mi (7,604.61 km) |
| Irthlingborough to Fortuna (California) | 5,183.08 mi (8,341.36 km) |
