| Porvoo to Benevento | 1,408.89 mi (2,267.39 km) |
| Porvoo to Bergamo | 1,206.55 mi (1,941.75 km) |
| Porvoo to Bernalda | 1,432.80 mi (2,305.86 km) |
| Porvoo to Bertinoro | 1,254.11 mi (2,018.30 km) |
| Porvoo to Besana in Brianza | 1,214.78 mi (1,954.99 km) |
| Porvoo to Besozzo | 1,219.55 mi (1,962.68 km) |
| Porvoo to Biancavilla | 1,640.94 mi (2,640.84 km) |
| Porvoo to Biassono | 1,219.24 mi (1,962.17 km) |
| Porvoo to Bibbiano | 1,253.67 mi (2,017.59 km) |
| Porvoo to Bibbiena | 1,288.83 mi (2,074.17 km) |
| Porvoo to Biella | 1,250.59 mi (2,012.63 km) |
| Porvoo to Bisceglie | 1,379.23 mi (2,219.66 km) |
| Porvoo to Bisignano | 1,498.10 mi (2,410.96 km) |
| Porvoo to Bitetto | 1,390.47 mi (2,237.74 km) |
| Porvoo to Bitonto | 1,385.63 mi (2,229.96 km) |
