| Irthlingborough to Lewiston (Maine) | 3,126.21 mi (5,031.15 km) |
| Irthlingborough to Lewisville (North Carolina) | 3,894.94 mi (6,268.30 km) |
| Irthlingborough to Lewisville (Texas) | 4,697.62 mi (7,560.09 km) |
| Irthlingborough to Lexington (Kentucky) | 3,963.20 mi (6,378.16 km) |
| Irthlingborough to Lexington (Nebraska) | 4,399.43 mi (7,080.20 km) |
| Irthlingborough to Lexington (North Carolina) | 3,903.35 mi (6,281.84 km) |
| Irthlingborough to Lexington (South Carolina) | 4,029.50 mi (6,484.86 km) |
| Irthlingborough to Lexington Park (Maryland) | 3,633.50 mi (5,847.55 km) |
| Irthlingborough to Liberal (Kansas) | 4,634.61 mi (7,458.69 km) |
| Irthlingborough to Liberty (Missouri) | 4,284.80 mi (6,895.72 km) |
| Irthlingborough to Liberty Lake (Washington) | 4,582.70 mi (7,375.15 km) |
| Irthlingborough to Liberty Triangle (Florida) | 4,314.44 mi (6,943.42 km) |
| Irthlingborough to Libertyville (Illinois) | 3,896.71 mi (6,271.14 km) |
| Irthlingborough to Lighthouse Point (Florida) | 4,368.28 mi (7,030.07 km) |
| Irthlingborough to Lilburn (Georgia) | 4,152.16 mi (6,682.26 km) |
