| Gloucester to Ilawa | 916.67 mi (1,475.24 km) |
| Gloucester to Imielin | 937.35 mi (1,508.51 km) |
| Gloucester to Inowroclaw | 865.26 mi (1,392.51 km) |
| Gloucester to Janow Lubelski | 1,063.40 mi (1,711.38 km) |
| Gloucester to Jarocin | 838.91 mi (1,350.10 km) |
| Gloucester to Jaroslaw | 1,087.17 mi (1,749.63 km) |
| Gloucester to Jasien | 876.41 mi (1,410.45 km) |
| Gloucester to Jaslo | 1,041.04 mi (1,675.40 km) |
| Gloucester to Jastrzebie-Zdroj | 913.80 mi (1,470.63 km) |
| Gloucester to Jawor | 793.92 mi (1,277.69 km) |
| Gloucester to Jaworzno | 938.31 mi (1,510.06 km) |
| Gloucester to Jedrzejow | 974.77 mi (1,568.75 km) |
| Gloucester to Jelcz-Laskowice | 842.41 mi (1,355.73 km) |
| Gloucester to Jelenia Gora | 776.11 mi (1,249.03 km) |
| Gloucester to Jozefoslaw | 987.00 mi (1,588.43 km) |
