| Marlow to Ilawa | 862.47 mi (1,388.01 km) |
| Marlow to Imielin | 875.12 mi (1,408.37 km) |
| Marlow to Inowroclaw | 808.69 mi (1,301.47 km) |
| Marlow to Janow Lubelski | 1,003.01 mi (1,614.19 km) |
| Marlow to Jarocin | 780.03 mi (1,255.34 km) |
| Marlow to Jaroslaw | 1,025.71 mi (1,650.72 km) |
| Marlow to Jasien | 824.61 mi (1,327.07 km) |
| Marlow to Jaslo | 978.85 mi (1,575.31 km) |
| Marlow to Jastrzebie-Zdroj | 851.11 mi (1,369.73 km) |
| Marlow to Jawor | 732.61 mi (1,179.01 km) |
| Marlow to Jaworzno | 876.21 mi (1,410.13 km) |
| Marlow to Jedrzejow | 913.69 mi (1,470.44 km) |
| Marlow to Jelcz-Laskowice | 781.34 mi (1,257.45 km) |
| Marlow to Jelenia Gora | 714.36 mi (1,149.66 km) |
| Marlow to Jozefoslaw | 929.07 mi (1,495.19 km) |
