| Bad Harzburg to Isselburg | 174.78 mi (281.28 km) |
| Bad Harzburg to Issum | 178.73 mi (287.64 km) |
| Bad Harzburg to Itzehoe | 147.79 mi (237.84 km) |
| Bad Harzburg to Jena | 79.32 mi (127.65 km) |
| Bad Harzburg to Jever | 161.50 mi (259.91 km) |
| Bad Harzburg to Jork | 120.03 mi (193.17 km) |
| Bad Harzburg to Juchen | 182.78 mi (294.15 km) |
| Bad Harzburg to Julich | 192.90 mi (310.45 km) |
| Bad Harzburg to Juterbog | 107.22 mi (172.56 km) |
| Bad Harzburg to Kaarst | 175.60 mi (282.60 km) |
| Bad Harzburg to Kaiserslautern | 208.06 mi (334.85 km) |
| Bad Harzburg to Kalkar | 182.63 mi (293.92 km) |
| Bad Harzburg to Kall | 196.48 mi (316.21 km) |
| Bad Harzburg to Kaltenkirchen | 137.63 mi (221.50 km) |
| Bad Harzburg to Kamen | 125.55 mi (202.05 km) |
