| Seaham to Ilawa | 845.73 mi (1,361.07 km) |
| Seaham to Imielin | 919.89 mi (1,480.42 km) |
| Seaham to Inowroclaw | 809.17 mi (1,302.23 km) |
| Seaham to Janow Lubelski | 1,027.33 mi (1,653.33 km) |
| Seaham to Jarocin | 798.35 mi (1,284.82 km) |
| Seaham to Jaroslaw | 1,059.18 mi (1,704.59 km) |
| Seaham to Jasien | 794.75 mi (1,279.02 km) |
| Seaham to Jaslo | 1,020.61 mi (1,642.52 km) |
| Seaham to Jastrzebie-Zdroj | 901.50 mi (1,450.82 km) |
| Seaham to Jawor | 773.30 mi (1,244.50 km) |
| Seaham to Jaworzno | 919.63 mi (1,480.00 km) |
| Seaham to Jedrzejow | 946.36 mi (1,523.02 km) |
| Seaham to Jelcz-Laskowice | 817.95 mi (1,316.36 km) |
| Seaham to Jelenia Gora | 759.88 mi (1,222.91 km) |
| Seaham to Jozefoslaw | 935.66 mi (1,505.81 km) |
