| Cwmbran to Ilawa | 952.67 mi (1,533.17 km) |
| Cwmbran to Imielin | 971.02 mi (1,562.70 km) |
| Cwmbran to Inowroclaw | 900.90 mi (1,449.85 km) |
| Cwmbran to Janow Lubelski | 1,097.98 mi (1,767.02 km) |
| Cwmbran to Jarocin | 873.98 mi (1,406.54 km) |
| Cwmbran to Jaroslaw | 1,121.27 mi (1,804.50 km) |
| Cwmbran to Jasien | 912.61 mi (1,468.70 km) |
| Cwmbran to Jaslo | 1,074.74 mi (1,729.63 km) |
| Cwmbran to Jastrzebie-Zdroj | 947.18 mi (1,524.34 km) |
| Cwmbran to Jawor | 828.06 mi (1,332.64 km) |
| Cwmbran to Jaworzno | 972.06 mi (1,564.37 km) |
| Cwmbran to Jedrzejow | 1,009.04 mi (1,623.90 km) |
| Cwmbran to Jelcz-Laskowice | 876.67 mi (1,410.87 km) |
| Cwmbran to Jelenia Gora | 810.04 mi (1,303.63 km) |
| Cwmbran to Jozefoslaw | 1,022.35 mi (1,645.31 km) |
