| Porvoo to Mouscron | 1,093.01 mi (1,759.03 km) |
| Porvoo to Namur | 1,057.44 mi (1,701.78 km) |
| Porvoo to Neder-Over-Heembeek | 1,049.61 mi (1,689.18 km) |
| Porvoo to Neerpelt | 1,001.64 mi (1,611.98 km) |
| Porvoo to Nevele | 1,068.01 mi (1,718.79 km) |
| Porvoo to Niel | 1,040.24 mi (1,674.10 km) |
| Porvoo to Nieuwpoort | 1,088.33 mi (1,751.50 km) |
| Porvoo to Nijlen | 1,028.25 mi (1,654.82 km) |
| Porvoo to Ninove | 1,063.92 mi (1,712.21 km) |
| Porvoo to Nivelles | 1,067.64 mi (1,718.20 km) |
| Porvoo to Olen | 1,023.13 mi (1,646.56 km) |
| Porvoo to Oostakker | 1,058.14 mi (1,702.92 km) |
| Porvoo to Oosterzele | 1,064.59 mi (1,713.29 km) |
| Porvoo to Oostkamp | 1,071.62 mi (1,724.61 km) |
| Porvoo to Opglabbeek | 1,006.53 mi (1,619.86 km) |
