| South Portland to Kucukcekmece | 4,733.36 mi (7,617.60 km) |
| South Portland to Kucukkuyu | 4,708.37 mi (7,577.39 km) |
| South Portland to Kulp | 5,324.91 mi (8,569.61 km) |
| South Portland to Kulu | 4,990.74 mi (8,031.82 km) |
| South Portland to Kumcati | 5,425.49 mi (8,731.48 km) |
| South Portland to Kursunlu | 4,916.54 mi (7,912.40 km) |
| South Portland to Kurtalan | 5,379.49 mi (8,657.45 km) |
| South Portland to Kusadasi | 4,809.60 mi (7,740.30 km) |
| South Portland to Kutahya | 4,851.74 mi (7,808.12 km) |
| South Portland to Kuzuculu | 5,220.19 mi (8,401.09 km) |
| South Portland to Lapseki | 4,676.48 mi (7,526.07 km) |
| South Portland to Lice | 5,313.93 mi (8,551.94 km) |
| South Portland to Luleburgaz | 4,657.61 mi (7,495.69 km) |
| South Portland to Macka | 5,158.64 mi (8,302.03 km) |
| South Portland to Malatya | 5,230.46 mi (8,417.61 km) |
