| Ferentino to Isny im Allgau | 444.00 mi (714.54 km) |
| Ferentino to Isselburg | 770.48 mi (1,239.97 km) |
| Ferentino to Issum | 753.32 mi (1,212.34 km) |
| Ferentino to Itzehoe | 863.07 mi (1,388.98 km) |
| Ferentino to Jena | 643.56 mi (1,035.72 km) |
| Ferentino to Jever | 857.91 mi (1,380.67 km) |
| Ferentino to Jork | 835.26 mi (1,344.22 km) |
| Ferentino to Juchen | 725.10 mi (1,166.94 km) |
| Ferentino to Julich | 717.37 mi (1,154.50 km) |
| Ferentino to Juterbog | 712.40 mi (1,146.50 km) |
| Ferentino to Kaarst | 729.75 mi (1,174.42 km) |
| Ferentino to Kaiserslautern | 597.83 mi (962.12 km) |
| Ferentino to Kalkar | 768.16 mi (1,236.23 km) |
| Ferentino to Kall | 690.90 mi (1,111.89 km) |
| Ferentino to Kaltenkirchen | 853.47 mi (1,373.53 km) |
