| Portland to Isny im Allgau | 5,388.38 mi (8,671.76 km) |
| Portland to Isselburg | 5,061.72 mi (8,146.06 km) |
| Portland to Issum | 5,077.41 mi (8,171.31 km) |
| Portland to Itzehoe | 5,012.30 mi (8,066.52 km) |
| Portland to Jena | 5,234.09 mi (8,423.46 km) |
| Portland to Jever | 4,996.11 mi (8,040.46 km) |
| Portland to Jork | 5,038.63 mi (8,108.89 km) |
| Portland to Juchen | 5,104.26 mi (8,214.51 km) |
| Portland to Julich | 5,110.92 mi (8,225.23 km) |
| Portland to Juterbog | 5,203.56 mi (8,374.32 km) |
| Portland to Kaarst | 5,100.48 mi (8,208.43 km) |
| Portland to Kaiserslautern | 5,230.45 mi (8,417.60 km) |
| Portland to Kalkar | 5,062.85 mi (8,147.87 km) |
| Portland to Kall | 5,136.88 mi (8,267.02 km) |
| Portland to Kaltenkirchen | 5,027.05 mi (8,090.26 km) |
