| Irthlingborough to Grosuplje | 816.09 mi (1,313.38 km) |
| Irthlingborough to Hodos | 845.78 mi (1,361.15 km) |
| Irthlingborough to Horjul | 799.69 mi (1,286.98 km) |
| Irthlingborough to Hrastnik | 826.89 mi (1,330.75 km) |
| Irthlingborough to Hrib-Loski Potok | 824.56 mi (1,327.00 km) |
| Irthlingborough to Idrija | 790.43 mi (1,272.07 km) |
| Irthlingborough to Ig | 811.08 mi (1,305.31 km) |
| Irthlingborough to Ilirska Bistrica | 817.90 mi (1,316.28 km) |
| Irthlingborough to Ivancna Gorica | 822.40 mi (1,323.52 km) |
| Irthlingborough to Izola | 797.92 mi (1,284.13 km) |
| Irthlingborough to Jesenice | 773.21 mi (1,244.36 km) |
| Irthlingborough to Jurovski Dol | 832.70 mi (1,340.10 km) |
| Irthlingborough to Jursinci | 845.02 mi (1,359.93 km) |
| Irthlingborough to Kamnik | 802.99 mi (1,292.29 km) |
| Irthlingborough to Kanal | 772.07 mi (1,242.52 km) |
