| Mablethorpe to Ilawa | 791.73 mi (1,274.17 km) |
| Mablethorpe to Imielin | 838.00 mi (1,348.63 km) |
| Mablethorpe to Inowroclaw | 746.28 mi (1,201.02 km) |
| Mablethorpe to Janow Lubelski | 955.07 mi (1,537.04 km) |
| Mablethorpe to Jarocin | 726.95 mi (1,169.91 km) |
| Mablethorpe to Jaroslaw | 983.06 mi (1,582.08 km) |
| Mablethorpe to Jasien | 747.07 mi (1,202.29 km) |
| Mablethorpe to Jaslo | 940.69 mi (1,513.89 km) |
| Mablethorpe to Jastrzebie-Zdroj | 817.13 mi (1,315.05 km) |
| Mablethorpe to Jawor | 691.77 mi (1,113.30 km) |
| Mablethorpe to Jaworzno | 838.30 mi (1,349.12 km) |
| Mablethorpe to Jedrzejow | 869.84 mi (1,399.88 km) |
| Mablethorpe to Jelcz-Laskowice | 738.63 mi (1,188.71 km) |
| Mablethorpe to Jelenia Gora | 676.18 mi (1,088.21 km) |
| Mablethorpe to Jozefoslaw | 870.95 mi (1,401.66 km) |
