| Porvoo to Blackburn | 1,141.23 mi (1,836.64 km) |
| Porvoo to Blackpool | 1,157.69 mi (1,863.12 km) |
| Porvoo to Blairgowrie | 1,070.17 mi (1,722.27 km) |
| Porvoo to Blandford Forum | 1,255.80 mi (2,021.01 km) |
| Porvoo to Blaydon | 1,069.46 mi (1,721.12 km) |
| Porvoo to Bletchley | 1,157.51 mi (1,862.83 km) |
| Porvoo to Bloxwich | 1,172.01 mi (1,886.17 km) |
| Porvoo to Blunsdon Saint Andrew | 1,209.10 mi (1,945.86 km) |
| Porvoo to Blyth | 1,056.66 mi (1,700.53 km) |
| Porvoo to Bo'ness | 1,097.44 mi (1,766.16 km) |
| Porvoo to Bodmin | 1,356.80 mi (2,183.56 km) |
| Porvoo to Bognor Regis | 1,211.59 mi (1,949.86 km) |
| Porvoo to Bolsover | 1,122.41 mi (1,806.34 km) |
| Porvoo to Bolton | 1,146.23 mi (1,844.68 km) |
| Porvoo to Bonhill | 1,131.21 mi (1,820.50 km) |
