| Irthlingborough to Legionowo | 903.71 mi (1,454.37 km) |
| Irthlingborough to Legnica | 719.76 mi (1,158.34 km) |
| Irthlingborough to Leszno | 729.06 mi (1,173.32 km) |
| Irthlingborough to Lezajsk | 1,001.47 mi (1,611.71 km) |
| Irthlingborough to Libiaz | 873.32 mi (1,405.48 km) |
| Irthlingborough to Lidzbark | 853.32 mi (1,373.29 km) |
| Irthlingborough to Lidzbark Warminski | 882.20 mi (1,419.76 km) |
| Irthlingborough to Limanowa | 928.94 mi (1,494.98 km) |
| Irthlingborough to Lipno | 828.52 mi (1,333.38 km) |
| Irthlingborough to Lobez | 679.74 mi (1,093.94 km) |
| Irthlingborough to Lodz | 850.82 mi (1,369.27 km) |
| Irthlingborough to Lomianki | 904.38 mi (1,455.45 km) |
| Irthlingborough to Lomza | 946.64 mi (1,523.48 km) |
| Irthlingborough to Lowicz | 867.11 mi (1,395.48 km) |
| Irthlingborough to Lubaczow | 1,032.72 mi (1,662.01 km) |
