| Irthlingborough to Land O' Lakes (Florida) | 4,367.86 mi (7,029.40 km) |
| Irthlingborough to Landover (Maryland) | 3,620.67 mi (5,826.91 km) |
| Irthlingborough to Langley Park (Maryland) | 3,621.43 mi (5,828.13 km) |
| Irthlingborough to Lanham (Maryland) | 3,617.11 mi (5,821.18 km) |
| Irthlingborough to Lansdale (Pennsylvania) | 3,496.42 mi (5,626.95 km) |
| Irthlingborough to Lansdowne (Pennsylvania) | 3,509.68 mi (5,648.29 km) |
| Irthlingborough to Lansdowne (Virginia) | 3,637.32 mi (5,853.70 km) |
| Irthlingborough to Lansing (Illinois) | 3,914.88 mi (6,300.40 km) |
| Irthlingborough to Lansing (Kansas) | 4,302.27 mi (6,923.84 km) |
| Irthlingborough to Lansing (Michigan) | 3,748.29 mi (6,032.28 km) |
| Irthlingborough to Lantana (Florida) | 4,351.35 mi (7,002.82 km) |
| Irthlingborough to Lantana (Texas) | 4,700.46 mi (7,564.66 km) |
| Irthlingborough to Laplace (Louisiana) | 4,598.41 mi (7,400.43 km) |
| Irthlingborough to Laramie (Wyoming) | 4,573.31 mi (7,360.03 km) |
| Irthlingborough to Laredo (Texas) | 5,083.98 mi (8,181.88 km) |
