| Greenford to Ilawa | 845.62 mi (1,360.90 km) |
| Greenford to Imielin | 856.66 mi (1,378.66 km) |
| Greenford to Inowroclaw | 791.33 mi (1,273.53 km) |
| Greenford to Janow Lubelski | 984.85 mi (1,584.97 km) |
| Greenford to Jarocin | 762.19 mi (1,226.63 km) |
| Greenford to Jaroslaw | 1,007.37 mi (1,621.20 km) |
| Greenford to Jasien | 808.33 mi (1,300.87 km) |
| Greenford to Jaslo | 960.39 mi (1,545.60 km) |
| Greenford to Jastrzebie-Zdroj | 832.58 mi (1,339.92 km) |
| Greenford to Jawor | 714.31 mi (1,149.57 km) |
| Greenford to Jaworzno | 857.77 mi (1,380.46 km) |
| Greenford to Jedrzejow | 895.41 mi (1,441.03 km) |
| Greenford to Jelcz-Laskowice | 763.08 mi (1,228.06 km) |
| Greenford to Jelenia Gora | 695.99 mi (1,120.09 km) |
| Greenford to Jozefoslaw | 911.40 mi (1,466.75 km) |
