| Pen-y-Bont ar Ogwr to Ilawa | 978.51 mi (1,574.76 km) |
| Pen-y-Bont ar Ogwr to Imielin | 995.45 mi (1,602.02 km) |
| Pen-y-Bont ar Ogwr to Inowroclaw | 926.53 mi (1,491.11 km) |
| Pen-y-Bont ar Ogwr to Janow Lubelski | 1,122.97 mi (1,807.24 km) |
| Pen-y-Bont ar Ogwr to Jarocin | 899.29 mi (1,447.27 km) |
| Pen-y-Bont ar Ogwr to Jaroslaw | 1,145.96 mi (1,844.24 km) |
| Pen-y-Bont ar Ogwr to Jasien | 938.55 mi (1,510.46 km) |
| Pen-y-Bont ar Ogwr to Jaslo | 1,099.18 mi (1,768.96 km) |
| Pen-y-Bont ar Ogwr to Jastrzebie-Zdroj | 971.43 mi (1,563.37 km) |
| Pen-y-Bont ar Ogwr to Jawor | 852.81 mi (1,372.46 km) |
| Pen-y-Bont ar Ogwr to Jaworzno | 996.54 mi (1,603.77 km) |
| Pen-y-Bont ar Ogwr to Jedrzejow | 1,033.85 mi (1,663.82 km) |
| Pen-y-Bont ar Ogwr to Jelcz-Laskowice | 901.49 mi (1,450.80 km) |
| Pen-y-Bont ar Ogwr to Jelenia Gora | 834.64 mi (1,343.23 km) |
| Pen-y-Bont ar Ogwr to Jozefoslaw | 1,047.82 mi (1,686.30 km) |
