| Irthlingborough to Forrest City (Arkansas) | 4,359.22 mi (7,015.49 km) |
| Irthlingborough to Fort Atkinson (Wisconsin) | 3,899.41 mi (6,275.50 km) |
| Irthlingborough to Fort Bliss (Texas) | 5,109.32 mi (8,222.66 km) |
| Irthlingborough to Fort Campbell North (Kentucky) | 4,148.18 mi (6,675.86 km) |
| Irthlingborough to Fort Carson (Colorado) | 4,682.51 mi (7,535.77 km) |
| Irthlingborough to Fort Collins (Colorado) | 4,595.25 mi (7,395.34 km) |
| Irthlingborough to Fort Dodge (Iowa) | 4,114.30 mi (6,621.33 km) |
| Irthlingborough to Fort Drum (New York) | 3,350.62 mi (5,392.30 km) |
| Irthlingborough to Fort Hood (Texas) | 4,828.37 mi (7,770.51 km) |
| Irthlingborough to Fort Hunt (Virginia) | 3,636.19 mi (5,851.88 km) |
| Irthlingborough to Fort Lauderdale (Florida) | 4,377.69 mi (7,045.21 km) |
| Irthlingborough to Fort Lee (New Jersey) | 3,416.67 mi (5,498.60 km) |
| Irthlingborough to Fort Leonard Wood (Missouri) | 4,273.06 mi (6,876.82 km) |
| Irthlingborough to Fort Lewis (Washington) | 4,762.45 mi (7,664.42 km) |
| Irthlingborough to Fort Madison (Iowa) | 4,102.84 mi (6,602.88 km) |
