| Irthlingborough to Isny im Allgau | 570.26 mi (917.75 km) |
| Irthlingborough to Isselburg | 302.45 mi (486.75 km) |
| Irthlingborough to Issum | 304.56 mi (490.15 km) |
| Irthlingborough to Itzehoe | 433.92 mi (698.33 km) |
| Irthlingborough to Jena | 531.45 mi (855.29 km) |
| Irthlingborough to Jever | 364.61 mi (586.78 km) |
| Irthlingborough to Jork | 436.48 mi (702.45 km) |
| Irthlingborough to Juchen | 315.98 mi (508.52 km) |
| Irthlingborough to Julich | 314.22 mi (505.69 km) |
| Irthlingborough to Juterbog | 579.73 mi (932.98 km) |
| Irthlingborough to Kaarst | 318.33 mi (512.30 km) |
| Irthlingborough to Kaiserslautern | 415.70 mi (669.00 km) |
| Irthlingborough to Kalkar | 296.24 mi (476.75 km) |
| Irthlingborough to Kall | 331.83 mi (534.03 km) |
| Irthlingborough to Kaltenkirchen | 450.72 mi (725.36 km) |
