| Portishead to Ilawa | 945.55 mi (1,521.71 km) |
| Portishead to Imielin | 960.51 mi (1,545.79 km) |
| Portishead to Inowroclaw | 892.88 mi (1,436.96 km) |
| Portishead to Janow Lubelski | 1,088.36 mi (1,751.55 km) |
| Portishead to Jarocin | 865.04 mi (1,392.15 km) |
| Portishead to Jaroslaw | 1,111.14 mi (1,788.20 km) |
| Portishead to Jasien | 906.32 mi (1,458.58 km) |
| Portishead to Jaslo | 1,064.24 mi (1,712.73 km) |
| Portishead to Jastrzebie-Zdroj | 936.42 mi (1,507.03 km) |
| Portishead to Jawor | 818.03 mi (1,316.49 km) |
| Portishead to Jaworzno | 961.62 mi (1,547.57 km) |
| Portishead to Jedrzejow | 999.10 mi (1,607.90 km) |
| Portishead to Jelcz-Laskowice | 866.75 mi (1,394.90 km) |
| Portishead to Jelenia Gora | 799.79 mi (1,287.14 km) |
| Portishead to Jozefoslaw | 1,013.80 mi (1,631.56 km) |
