| Portsmouth to Glyka Nera | 1,504.28 mi (2,420.91 km) |
| Portsmouth to Grevena | 1,310.64 mi (2,109.27 km) |
| Portsmouth to Ialysos | 1,750.26 mi (2,816.78 km) |
| Portsmouth to Ilion | 1,496.48 mi (2,408.36 km) |
| Portsmouth to Ilioupoli | 1,503.25 mi (2,419.25 km) |
| Portsmouth to Ioannina | 1,307.89 mi (2,104.84 km) |
| Portsmouth to Irakleio | 1,685.32 mi (2,712.26 km) |
| Portsmouth to Irakleio | 1,498.29 mi (2,411.26 km) |
| Portsmouth to Kaisariani | 1,501.89 mi (2,417.06 km) |
| Portsmouth to Kalamaria | 1,348.93 mi (2,170.89 km) |
| Portsmouth to Kalamata | 1,484.82 mi (2,389.58 km) |
| Portsmouth to Kallithea | 1,500.50 mi (2,414.81 km) |
| Portsmouth to Kalymnos | 1,676.25 mi (2,697.66 km) |
| Portsmouth to Kalyvia Thorikou | 1,514.58 mi (2,437.49 km) |
| Portsmouth to Kamatero | 1,495.68 mi (2,407.07 km) |
