| Portsmouth to Karditsa | 1,363.32 mi (2,194.05 km) |
| Portsmouth to Kastoria | 1,284.54 mi (2,067.26 km) |
| Portsmouth to Katerini | 1,344.93 mi (2,164.45 km) |
| Portsmouth to Keratsini | 1,496.44 mi (2,408.29 km) |
| Portsmouth to Kerkyra | 1,274.02 mi (2,050.34 km) |
| Portsmouth to Kiato | 1,460.70 mi (2,350.78 km) |
| Portsmouth to Kifisia | 1,498.65 mi (2,411.84 km) |
| Portsmouth to Kilkis | 1,328.08 mi (2,137.33 km) |
| Portsmouth to Komotini | 1,428.06 mi (2,298.23 km) |
| Portsmouth to Korinthos | 1,471.06 mi (2,367.44 km) |
| Portsmouth to Koropi | 1,509.67 mi (2,429.58 km) |
| Portsmouth to Korydallos | 1,496.94 mi (2,409.09 km) |
| Portsmouth to Kos | 1,692.85 mi (2,724.38 km) |
| Portsmouth to Kozani | 1,314.86 mi (2,116.06 km) |
| Portsmouth to Lagos | 1,413.18 mi (2,274.29 km) |
