| Grantham to Ilawa | 833.58 mi (1,341.52 km) |
| Grantham to Imielin | 871.89 mi (1,403.16 km) |
| Grantham to Inowroclaw | 786.25 mi (1,265.34 km) |
| Grantham to Janow Lubelski | 991.95 mi (1,596.39 km) |
| Grantham to Jarocin | 764.67 mi (1,230.63 km) |
| Grantham to Jaroslaw | 1,018.65 mi (1,639.35 km) |
| Grantham to Jasien | 790.21 mi (1,271.72 km) |
| Grantham to Jaslo | 975.05 mi (1,569.18 km) |
| Grantham to Jastrzebie-Zdroj | 850.13 mi (1,368.15 km) |
| Grantham to Jawor | 726.28 mi (1,168.84 km) |
| Grantham to Jaworzno | 872.40 mi (1,403.99 km) |
| Grantham to Jedrzejow | 905.55 mi (1,457.34 km) |
| Grantham to Jelcz-Laskowice | 773.76 mi (1,245.25 km) |
| Grantham to Jelenia Gora | 709.93 mi (1,142.53 km) |
| Grantham to Jozefoslaw | 910.15 mi (1,464.74 km) |
