| Portalegre to Ilawa | 1,603.08 mi (2,579.90 km) |
| Portalegre to Imielin | 1,494.17 mi (2,404.64 km) |
| Portalegre to Inowroclaw | 1,529.72 mi (2,461.85 km) |
| Portalegre to Janow Lubelski | 1,640.54 mi (2,640.19 km) |
| Portalegre to Jarocin | 1,475.31 mi (2,374.28 km) |
| Portalegre to Jaroslaw | 1,638.24 mi (2,636.49 km) |
| Portalegre to Jasien | 1,591.67 mi (2,561.55 km) |
| Portalegre to Jaslo | 1,581.39 mi (2,545.01 km) |
| Portalegre to Jastrzebie-Zdroj | 1,463.43 mi (2,355.17 km) |
| Portalegre to Jawor | 1,397.08 mi (2,248.39 km) |
| Portalegre to Jaworzno | 1,498.06 mi (2,410.89 km) |
| Portalegre to Jedrzejow | 1,550.74 mi (2,495.67 km) |
| Portalegre to Jelcz-Laskowice | 1,441.07 mi (2,319.17 km) |
| Portalegre to Jelenia Gora | 1,374.44 mi (2,211.94 km) |
| Portalegre to Jozefoslaw | 1,616.66 mi (2,601.76 km) |
