| Grudziadz to Isny im Allgau | 552.87 mi (889.76 km) |
| Grudziadz to Isselburg | 526.79 mi (847.79 km) |
| Grudziadz to Issum | 534.96 mi (860.93 km) |
| Grudziadz to Itzehoe | 378.78 mi (609.58 km) |
| Grudziadz to Jena | 351.09 mi (565.02 km) |
| Grudziadz to Jever | 445.37 mi (716.76 km) |
| Grudziadz to Jork | 372.56 mi (599.58 km) |
| Grudziadz to Juchen | 542.61 mi (873.25 km) |
| Grudziadz to Julich | 553.18 mi (890.25 km) |
| Grudziadz to Juterbog | 259.05 mi (416.90 km) |
| Grudziadz to Kaarst | 534.99 mi (860.98 km) |
| Grudziadz to Kaiserslautern | 548.35 mi (882.49 km) |
| Grudziadz to Kalkar | 535.86 mi (862.38 km) |
| Grudziadz to Kall | 556.38 mi (895.40 km) |
| Grudziadz to Kaltenkirchen | 360.64 mi (580.39 km) |
