| Upminster to Ilawa | 820.50 mi (1,320.46 km) |
| Upminster to Imielin | 830.85 mi (1,337.13 km) |
| Upminster to Inowroclaw | 765.85 mi (1,232.52 km) |
| Upminster to Janow Lubelski | 959.02 mi (1,543.39 km) |
| Upminster to Jarocin | 736.45 mi (1,185.21 km) |
| Upminster to Jaroslaw | 981.53 mi (1,579.61 km) |
| Upminster to Jasien | 783.66 mi (1,261.18 km) |
| Upminster to Jaslo | 934.58 mi (1,504.07 km) |
| Upminster to Jastrzebie-Zdroj | 806.81 mi (1,298.44 km) |
| Upminster to Jawor | 688.46 mi (1,107.97 km) |
| Upminster to Jaworzno | 831.96 mi (1,338.91 km) |
| Upminster to Jedrzejow | 869.57 mi (1,399.44 km) |
| Upminster to Jelcz-Laskowice | 737.24 mi (1,186.47 km) |
| Upminster to Jelenia Gora | 670.16 mi (1,078.51 km) |
| Upminster to Jozefoslaw | 885.73 mi (1,425.45 km) |
