| Irthlingborough to Lambeth | 61.37 mi (98.76 km) |
| Irthlingborough to Lanark | 264.71 mi (426.01 km) |
| Irthlingborough to Lancaster | 149.67 mi (240.87 km) |
| Irthlingborough to Lancing | 103.86 mi (167.15 km) |
| Irthlingborough to Larbert | 286.61 mi (461.26 km) |
| Irthlingborough to Largs | 295.36 mi (475.33 km) |
| Irthlingborough to Larkhall | 272.29 mi (438.20 km) |
| Irthlingborough to Launceston | 198.88 mi (320.06 km) |
| Irthlingborough to Leagrave | 29.76 mi (47.89 km) |
| Irthlingborough to Leatherhead | 72.13 mi (116.08 km) |
| Irthlingborough to Ledbury | 79.24 mi (127.52 km) |
| Irthlingborough to Leeds | 109.15 mi (175.66 km) |
| Irthlingborough to Leek | 80.09 mi (128.88 km) |
| Irthlingborough to Leicester | 30.58 mi (49.21 km) |
| Irthlingborough to Leigh | 113.34 mi (182.41 km) |
