| Porvoo to Siegburg | 972.92 mi (1,565.77 km) |
| Porvoo to Siegen | 945.96 mi (1,522.37 km) |
| Porvoo to Sigmaringen | 1,072.69 mi (1,726.33 km) |
| Porvoo to Simbach am Inn | 976.96 mi (1,572.27 km) |
| Porvoo to Simmerath | 1,009.13 mi (1,624.04 km) |
| Porvoo to Sindelfingen | 1,041.30 mi (1,675.82 km) |
| Porvoo to Sinsheim | 1,013.43 mi (1,630.96 km) |
| Porvoo to Sinzheim | 1,059.58 mi (1,705.23 km) |
| Porvoo to Sinzig | 985.22 mi (1,585.56 km) |
| Porvoo to Soest | 907.04 mi (1,459.74 km) |
| Porvoo to Solingen | 957.17 mi (1,540.42 km) |
| Porvoo to Soltau | 785.77 mi (1,264.58 km) |
| Porvoo to Sommerda | 848.60 mi (1,365.69 km) |
| Porvoo to Sondershausen | 843.54 mi (1,357.55 km) |
| Porvoo to Sonneberg | 893.53 mi (1,437.99 km) |
