| Sonderborg to Isselburg | 253.11 mi (407.35 km) |
| Sonderborg to Issum | 271.57 mi (437.05 km) |
| Sonderborg to Itzehoe | 69.21 mi (111.39 km) |
| Sonderborg to Jena | 285.38 mi (459.27 km) |
| Sonderborg to Jever | 119.97 mi (193.08 km) |
| Sonderborg to Jork | 95.41 mi (153.55 km) |
| Sonderborg to Juchen | 296.76 mi (477.58 km) |
| Sonderborg to Julich | 310.60 mi (499.86 km) |
| Sonderborg to Juterbog | 242.71 mi (390.60 km) |
| Sonderborg to Kaarst | 287.39 mi (462.51 km) |
| Sonderborg to Kaiserslautern | 387.44 mi (623.52 km) |
| Sonderborg to Kalkar | 262.56 mi (422.55 km) |
| Sonderborg to Kall | 330.56 mi (531.98 km) |
| Sonderborg to Kaltenkirchen | 74.52 mi (119.93 km) |
| Sonderborg to Kamen | 245.77 mi (395.53 km) |
