| Herndon to Land O' Lakes (Florida) | 798.25 mi (1,284.66 km) |
| Herndon to Landover (Maryland) | 27.01 mi (43.47 km) |
| Herndon to Langley Park (Maryland) | 21.84 mi (35.15 km) |
| Herndon to Lanham (Maryland) | 29.26 mi (47.09 km) |
| Herndon to Lansdale (Pennsylvania) | 142.41 mi (229.19 km) |
| Herndon to Lansdowne (Pennsylvania) | 131.06 mi (210.93 km) |
| Herndon to Lansdowne (Virginia) | 9.48 mi (15.25 km) |
| Herndon to Lansing (Illinois) | 564.41 mi (908.33 km) |
| Herndon to Lansing (Kansas) | 937.55 mi (1,508.84 km) |
| Herndon to Lansing (Michigan) | 455.28 mi (732.70 km) |
| Herndon to Lantana (Florida) | 869.64 mi (1,399.55 km) |
| Herndon to Lantana (Texas) | 1,172.12 mi (1,886.35 km) |
| Herndon to Laplace (Louisiana) | 964.15 mi (1,551.66 km) |
| Herndon to Laramie (Wyoming) | 1,492.78 mi (2,402.40 km) |
| Herndon to Laredo (Texas) | 1,494.28 mi (2,404.81 km) |
