| Middlesbrough to Ilawa | 842.63 mi (1,356.08 km) |
| Middlesbrough to Imielin | 912.11 mi (1,467.90 km) |
| Middlesbrough to Inowroclaw | 804.55 mi (1,294.80 km) |
| Middlesbrough to Janow Lubelski | 1,021.33 mi (1,643.68 km) |
| Middlesbrough to Jarocin | 792.28 mi (1,275.06 km) |
| Middlesbrough to Jaroslaw | 1,052.53 mi (1,693.88 km) |
| Middlesbrough to Jasien | 792.60 mi (1,275.56 km) |
| Middlesbrough to Jaslo | 1,013.26 mi (1,630.68 km) |
| Middlesbrough to Jastrzebie-Zdroj | 893.25 mi (1,437.55 km) |
| Middlesbrough to Jawor | 765.44 mi (1,231.86 km) |
| Middlesbrough to Jaworzno | 911.95 mi (1,467.64 km) |
| Middlesbrough to Jedrzejow | 939.55 mi (1,512.07 km) |
| Middlesbrough to Jelcz-Laskowice | 810.53 mi (1,304.42 km) |
| Middlesbrough to Jelenia Gora | 751.62 mi (1,209.62 km) |
| Middlesbrough to Jozefoslaw | 930.88 mi (1,498.11 km) |
