| Herndon to Lagoa | 3,658.93 mi (5,888.48 km) |
| Herndon to Lagoa | 2,769.15 mi (4,456.52 km) |
| Herndon to Lagos | 3,648.65 mi (5,871.93 km) |
| Herndon to Lamego | 3,581.70 mi (5,764.19 km) |
| Herndon to Leiria | 3,569.05 mi (5,743.84 km) |
| Herndon to Lisbon | 3,579.42 mi (5,760.51 km) |
| Herndon to Loule | 3,680.97 mi (5,923.94 km) |
| Herndon to Loures | 3,575.65 mi (5,754.45 km) |
| Herndon to Lourinha | 3,558.26 mi (5,726.47 km) |
| Herndon to Lousa | 3,586.46 mi (5,771.86 km) |
| Herndon to Lousada | 3,555.82 mi (5,722.54 km) |
| Herndon to Macedo de Cavaleiros | 3,611.13 mi (5,811.56 km) |
| Herndon to Mafamude | 3,542.99 mi (5,701.90 km) |
| Herndon to Mafra | 3,564.55 mi (5,736.60 km) |
| Herndon to Maia | 3,539.35 mi (5,696.03 km) |
