| South Portland to Klaukkala | 3,824.92 mi (6,155.61 km) |
| South Portland to Kokkola | 3,669.65 mi (5,905.73 km) |
| South Portland to Kontiolahti | 3,888.19 mi (6,257.44 km) |
| South Portland to Korsholm | 3,650.20 mi (5,874.43 km) |
| South Portland to Kotka | 3,887.08 mi (6,255.65 km) |
| South Portland to Kouvola | 3,866.22 mi (6,222.08 km) |
| South Portland to Kuhmo | 3,831.64 mi (6,166.43 km) |
| South Portland to Kuopio | 3,824.62 mi (6,155.13 km) |
| South Portland to Kurikka | 3,685.39 mi (5,931.07 km) |
| South Portland to Kuusamo | 3,760.84 mi (6,052.48 km) |
| South Portland to Kuusankoski | 3,862.49 mi (6,216.07 km) |
| South Portland to Lahti | 3,831.49 mi (6,166.19 km) |
| South Portland to Laitila | 3,717.31 mi (5,982.43 km) |
| South Portland to Lapinlahti | 3,800.62 mi (6,116.50 km) |
| South Portland to Lappeenranta | 3,902.08 mi (6,279.79 km) |
