| Isernia to Imielin | 635.82 mi (1,023.25 km) |
| Isernia to Inowroclaw | 795.56 mi (1,280.34 km) |
| Isernia to Janow Lubelski | 740.38 mi (1,191.53 km) |
| Isernia to Jarocin | 732.30 mi (1,178.53 km) |
| Isernia to Jaroslaw | 708.48 mi (1,140.18 km) |
| Isernia to Jasien | 902.02 mi (1,451.66 km) |
| Isernia to Jaslo | 661.56 mi (1,064.67 km) |
| Isernia to Jastrzebie-Zdroj | 613.27 mi (986.97 km) |
| Isernia to Jawor | 659.34 mi (1,061.11 km) |
| Isernia to Jaworzno | 641.27 mi (1,032.02 km) |
| Isernia to Jedrzejow | 687.59 mi (1,106.56 km) |
| Isernia to Jelcz-Laskowice | 667.94 mi (1,074.94 km) |
| Isernia to Jelenia Gora | 646.52 mi (1,040.47 km) |
| Isernia to Jozefoslaw | 792.58 mi (1,275.54 km) |
| Isernia to Jozefow | 798.18 mi (1,284.54 km) |
