| Slough to Land O' Lakes (Florida) | 4,381.12 mi (7,050.74 km) |
| Slough to Landover (Maryland) | 3,638.93 mi (5,856.29 km) |
| Slough to Langley Park (Maryland) | 3,639.80 mi (5,857.69 km) |
| Slough to Lanham (Maryland) | 3,635.37 mi (5,850.57 km) |
| Slough to Lansdale (Pennsylvania) | 3,514.92 mi (5,656.72 km) |
| Slough to Lansdowne (Pennsylvania) | 3,527.90 mi (5,677.61 km) |
| Slough to Lansdowne (Virginia) | 3,656.08 mi (5,883.89 km) |
| Slough to Lansing (Illinois) | 3,941.30 mi (6,342.91 km) |
| Slough to Lansing (Kansas) | 4,330.93 mi (6,969.96 km) |
| Slough to Lansing (Michigan) | 3,774.05 mi (6,073.74 km) |
| Slough to Lantana (Florida) | 4,361.75 mi (7,019.55 km) |
| Slough to Lantana (Texas) | 4,726.43 mi (7,606.45 km) |
| Slough to Laplace (Louisiana) | 4,618.33 mi (7,432.48 km) |
| Slough to Laramie (Wyoming) | 4,608.63 mi (7,416.87 km) |
| Slough to Laredo (Texas) | 5,108.07 mi (8,220.65 km) |
