| Portalegre to Leopoldsburg | 1,019.28 mi (1,640.37 km) |
| Portalegre to Lessines | 958.05 mi (1,541.83 km) |
| Portalegre to Leuven | 991.19 mi (1,595.17 km) |
| Portalegre to Lichtervelde | 956.71 mi (1,539.68 km) |
| Portalegre to Liedekerke | 972.98 mi (1,565.86 km) |
| Portalegre to Liege | 1,004.42 mi (1,616.46 km) |
| Portalegre to Lierre | 1,000.57 mi (1,610.27 km) |
| Portalegre to Lille | 1,013.30 mi (1,630.75 km) |
| Portalegre to Lint | 997.37 mi (1,605.12 km) |
| Portalegre to Lochristi | 978.76 mi (1,575.16 km) |
| Portalegre to Lokeren | 982.79 mi (1,581.65 km) |
| Portalegre to Lommel | 1,027.04 mi (1,652.85 km) |
| Portalegre to Londerzeel | 986.09 mi (1,586.95 km) |
| Portalegre to Louvain-la-Neuve | 974.16 mi (1,567.76 km) |
| Portalegre to Lovendegem | 972.56 mi (1,565.18 km) |
