| Irthlingborough to La Riviera (California) | 5,221.44 mi (8,403.10 km) |
| Irthlingborough to La Vergne (Tennessee) | 4,143.75 mi (6,668.72 km) |
| Irthlingborough to La Verne (California) | 5,368.55 mi (8,639.84 km) |
| Irthlingborough to La Vista (Nebraska) | 4,247.97 mi (6,836.45 km) |
| Irthlingborough to Lacey (Washington) | 4,771.18 mi (7,678.47 km) |
| Irthlingborough to Lackawanna (New York) | 3,522.91 mi (5,669.58 km) |
| Irthlingborough to Laconia (New Hampshire) | 3,199.98 mi (5,149.87 km) |
| Irthlingborough to Ladera Ranch (California) | 5,397.25 mi (8,686.03 km) |
| Irthlingborough to Ladson (South Carolina) | 4,032.03 mi (6,488.92 km) |
| Irthlingborough to Lady Lake (Florida) | 4,310.20 mi (6,936.59 km) |
| Irthlingborough to Lafayette (California) | 5,283.18 mi (8,502.45 km) |
| Irthlingborough to Lafayette (Colorado) | 4,625.64 mi (7,444.25 km) |
| Irthlingborough to Lafayette (Indiana) | 3,943.95 mi (6,347.18 km) |
| Irthlingborough to Lafayette (Louisiana) | 4,653.21 mi (7,488.62 km) |
| Irthlingborough to LaGrange (Georgia) | 4,231.12 mi (6,809.33 km) |
