| Portsmouth to Isny im Allgau | 545.31 mi (877.59 km) |
| Portsmouth to Isselburg | 333.66 mi (536.97 km) |
| Portsmouth to Issum | 329.14 mi (529.69 km) |
| Portsmouth to Itzehoe | 495.91 mi (798.09 km) |
| Portsmouth to Jena | 552.03 mi (888.40 km) |
| Portsmouth to Jever | 425.65 mi (685.01 km) |
| Portsmouth to Jork | 493.13 mi (793.61 km) |
| Portsmouth to Juchen | 330.79 mi (532.36 km) |
| Portsmouth to Julich | 324.65 mi (522.48 km) |
| Portsmouth to Juterbog | 614.87 mi (989.54 km) |
| Portsmouth to Kaarst | 335.94 mi (540.65 km) |
| Portsmouth to Kaiserslautern | 403.14 mi (648.79 km) |
| Portsmouth to Kalkar | 325.29 mi (523.51 km) |
| Portsmouth to Kall | 334.69 mi (538.62 km) |
| Portsmouth to Kaltenkirchen | 510.76 mi (821.99 km) |
