| Horndean to Isny im Allgau | 544.03 mi (875.54 km) |
| Horndean to Isselburg | 327.93 mi (527.76 km) |
| Horndean to Issum | 323.80 mi (521.10 km) |
| Horndean to Itzehoe | 488.78 mi (786.61 km) |
| Horndean to Jena | 547.37 mi (880.91 km) |
| Horndean to Jever | 418.49 mi (673.50 km) |
| Horndean to Jork | 486.27 mi (782.57 km) |
| Horndean to Juchen | 326.08 mi (524.78 km) |
| Horndean to Julich | 320.22 mi (515.34 km) |
| Horndean to Juterbog | 609.34 mi (980.64 km) |
| Horndean to Kaarst | 331.07 mi (532.80 km) |
| Horndean to Kaiserslautern | 400.61 mi (644.72 km) |
| Horndean to Kalkar | 319.67 mi (514.46 km) |
| Horndean to Kall | 330.81 mi (532.39 km) |
| Horndean to Kaltenkirchen | 503.74 mi (810.69 km) |
