| Cities | Distance |
|---|---|
| Sonderborg to Hameenlinna | 680.03 mi (1,094.41 km) |
| Sonderborg to Hamina | 748.05 mi (1,203.87 km) |
| Sonderborg to Hanko | 595.33 mi (958.09 km) |
| Sonderborg to Hattula | 679.54 mi (1,093.61 km) |
| Sonderborg to Haukipudas | 884.55 mi (1,423.55 km) |
| Sonderborg to Hausjarvi | 688.99 mi (1,108.83 km) |
| Sonderborg to Heinola | 732.36 mi (1,178.62 km) |
| Sonderborg to Helsinki | 666.45 mi (1,072.55 km) |
| Sonderborg to Hollola | 710.07 mi (1,142.74 km) |
| Sonderborg to Huittinen | 638.23 mi (1,027.14 km) |
| Sonderborg to Hyvinkaa | 678.62 mi (1,092.14 km) |
| Sonderborg to Ii | 891.64 mi (1,434.95 km) |
| Sonderborg to Iisalmi | 852.16 mi (1,371.42 km) |
| Sonderborg to Ilmajoki | 705.40 mi (1,135.23 km) |
| Sonderborg to Imatra | 813.42 mi (1,309.07 km) |