| Grenchen to Ilawa | 693.52 mi (1,116.11 km) |
| Grenchen to Imielin | 575.70 mi (926.50 km) |
| Grenchen to Inowroclaw | 617.55 mi (993.85 km) |
| Grenchen to Janow Lubelski | 722.18 mi (1,162.24 km) |
| Grenchen to Jarocin | 559.35 mi (900.18 km) |
| Grenchen to Jaroslaw | 723.63 mi (1,164.57 km) |
| Grenchen to Jasien | 692.72 mi (1,114.83 km) |
| Grenchen to Jaslo | 667.42 mi (1,074.12 km) |
| Grenchen to Jastrzebie-Zdroj | 545.18 mi (877.38 km) |
| Grenchen to Jawor | 478.65 mi (770.32 km) |
| Grenchen to Jaworzno | 579.35 mi (932.37 km) |
| Grenchen to Jedrzejow | 631.33 mi (1,016.03 km) |
| Grenchen to Jelcz-Laskowice | 521.35 mi (839.03 km) |
| Grenchen to Jelenia Gora | 456.06 mi (733.96 km) |
| Grenchen to Jozefoslaw | 697.00 mi (1,121.72 km) |
