| Porvoo to Beyne-Heusay | 1,026.90 mi (1,652.64 km) |
| Porvoo to Bierbeek | 1,041.60 mi (1,676.29 km) |
| Porvoo to Bilzen | 1,017.86 mi (1,638.09 km) |
| Porvoo to Binche | 1,081.44 mi (1,740.41 km) |
| Porvoo to Bissegem | 1,088.86 mi (1,752.35 km) |
| Porvoo to Blankenberge | 1,068.15 mi (1,719.02 km) |
| Porvoo to Blegny | 1,021.90 mi (1,644.59 km) |
| Porvoo to Bocholt | 1,000.43 mi (1,610.03 km) |
| Porvoo to Boechout | 1,034.08 mi (1,664.19 km) |
| Porvoo to Bonheiden | 1,038.43 mi (1,671.19 km) |
| Porvoo to Boom | 1,040.90 mi (1,675.17 km) |
| Porvoo to Boortmeerbeek | 1,039.94 mi (1,673.63 km) |
| Porvoo to Borgerhout | 1,032.28 mi (1,661.29 km) |
| Porvoo to Borgloon | 1,026.24 mi (1,651.57 km) |
| Porvoo to Bornem | 1,044.07 mi (1,680.27 km) |
