| Belfast to Isny im Allgau | 837.62 mi (1,348.02 km) |
| Belfast to Isselburg | 546.39 mi (879.33 km) |
| Belfast to Issum | 553.74 mi (891.15 km) |
| Belfast to Itzehoe | 623.83 mi (1,003.96 km) |
| Belfast to Jena | 772.55 mi (1,243.30 km) |
| Belfast to Jever | 564.04 mi (907.73 km) |
| Belfast to Jork | 635.93 mi (1,023.43 km) |
| Belfast to Juchen | 571.16 mi (919.19 km) |
| Belfast to Julich | 572.05 mi (920.63 km) |
| Belfast to Juterbog | 802.42 mi (1,291.37 km) |
| Belfast to Kaarst | 571.58 mi (919.86 km) |
| Belfast to Kaiserslautern | 680.88 mi (1,095.77 km) |
| Belfast to Kalkar | 542.51 mi (873.08 km) |
| Belfast to Kall | 592.80 mi (954.02 km) |
| Belfast to Kaltenkirchen | 642.69 mi (1,034.32 km) |
