| South Portland to Kavak | 5,012.45 mi (8,066.75 km) |
| South Portland to Kayapinar | 5,321.91 mi (8,564.78 km) |
| South Portland to Kayseri | 5,102.77 mi (8,212.11 km) |
| South Portland to Kemalpasa | 4,790.88 mi (7,710.17 km) |
| South Portland to Kemer | 5,003.37 mi (8,052.15 km) |
| South Portland to Keskin | 4,984.58 mi (8,021.91 km) |
| South Portland to Kilimli | 4,831.59 mi (7,775.70 km) |
| South Portland to Kilis | 5,263.14 mi (8,470.21 km) |
| South Portland to Kinik | 4,759.76 mi (7,660.09 km) |
| South Portland to Kirikkale | 4,972.82 mi (8,002.98 km) |
| South Portland to Kirkagac | 4,771.40 mi (7,678.82 km) |
| South Portland to Kirklareli | 4,638.03 mi (7,464.18 km) |
| South Portland to Kirsehir | 5,030.76 mi (8,096.22 km) |
| South Portland to Kizilpinar | 4,688.19 mi (7,544.92 km) |
| South Portland to Kiziltepe | 5,374.08 mi (8,648.75 km) |
