| Sonderborg to Kokkola | 771.74 mi (1,242.00 km) |
| Sonderborg to Kontiolahti | 892.96 mi (1,437.07 km) |
| Sonderborg to Korsholm | 704.51 mi (1,133.80 km) |
| Sonderborg to Kotka | 737.23 mi (1,186.46 km) |
| Sonderborg to Kouvola | 741.63 mi (1,193.54 km) |
| Sonderborg to Kuhmo | 932.48 mi (1,500.68 km) |
| Sonderborg to Kuopio | 838.33 mi (1,349.17 km) |
| Sonderborg to Kurikka | 695.62 mi (1,119.49 km) |
| Sonderborg to Kuusamo | 1,001.48 mi (1,611.73 km) |
| Sonderborg to Kuusankoski | 740.44 mi (1,191.62 km) |
| Sonderborg to Lahti | 713.91 mi (1,148.93 km) |
| Sonderborg to Laitila | 599.42 mi (964.67 km) |
| Sonderborg to Lapinlahti | 849.07 mi (1,366.44 km) |
| Sonderborg to Lappeenranta | 792.36 mi (1,275.18 km) |
| Sonderborg to Lapua | 726.40 mi (1,169.03 km) |
