| Longford to Isny im Allgau | 881.51 mi (1,418.66 km) |
| Longford to Isselburg | 609.31 mi (980.59 km) |
| Longford to Issum | 614.15 mi (988.38 km) |
| Longford to Itzehoe | 704.56 mi (1,133.88 km) |
| Longford to Jena | 838.28 mi (1,349.08 km) |
| Longford to Jever | 641.75 mi (1,032.80 km) |
| Longford to Jork | 714.56 mi (1,149.97 km) |
| Longford to Juchen | 628.18 mi (1,010.96 km) |
| Longford to Julich | 627.25 mi (1,009.47 km) |
| Longford to Juterbog | 875.67 mi (1,409.26 km) |
| Longford to Kaarst | 629.81 mi (1,013.59 km) |
| Longford to Kaiserslautern | 728.96 mi (1,173.14 km) |
| Longford to Kalkar | 604.29 mi (972.51 km) |
| Longford to Kall | 645.53 mi (1,038.88 km) |
| Longford to Kaltenkirchen | 723.17 mi (1,163.83 km) |
