| Porvoo to Bouguenais | 1,422.32 mi (2,289.01 km) |
| Porvoo to Boulogne-Billancourt | 1,219.56 mi (1,962.69 km) |
| Porvoo to Boulogne-sur-Mer | 1,142.39 mi (1,838.50 km) |
| Porvoo to Bourg-de-Peage | 1,355.56 mi (2,181.56 km) |
| Porvoo to Bourg-en-Bresse | 1,282.54 mi (2,064.06 km) |
| Porvoo to Bourg-la-Reine | 1,220.31 mi (1,963.90 km) |
| Porvoo to Bourg-les-Valence | 1,364.81 mi (2,196.45 km) |
| Porvoo to Bourges | 1,309.59 mi (2,107.58 km) |
| Porvoo to Bourgoin-Jallieu | 1,317.58 mi (2,120.44 km) |
| Porvoo to Bressuire | 1,406.44 mi (2,263.44 km) |
| Porvoo to Brest | 1,449.22 mi (2,332.29 km) |
| Porvoo to Bretigny-sur-Orge | 1,229.48 mi (1,978.65 km) |
| Porvoo to Breuillet | 1,235.82 mi (1,988.86 km) |
| Porvoo to Briancon | 1,324.95 mi (2,132.30 km) |
| Porvoo to Brie-Comte-Robert | 1,216.25 mi (1,957.37 km) |
