| Porvoo to Bistrita | 917.45 mi (1,476.49 km) |
| Porvoo to Blaj | 985.01 mi (1,585.22 km) |
| Porvoo to Bocsa | 1,050.30 mi (1,690.30 km) |
| Porvoo to Boldesti-Scaeni | 1,061.68 mi (1,708.61 km) |
| Porvoo to Bolintin Vale | 1,101.85 mi (1,773.26 km) |
| Porvoo to Borsa | 881.10 mi (1,417.99 km) |
| Porvoo to Botosani | 874.66 mi (1,407.64 km) |
| Porvoo to Brad | 992.51 mi (1,597.29 km) |
| Porvoo to Bragadiru | 1,107.20 mi (1,781.86 km) |
| Porvoo to Braila | 1,049.27 mi (1,688.63 km) |
| Porvoo to Brasov | 1,017.59 mi (1,637.65 km) |
| Porvoo to Breaza | 1,050.72 mi (1,690.96 km) |
| Porvoo to Bucharest | 1,103.01 mi (1,775.12 km) |
| Porvoo to Buftea | 1,093.42 mi (1,759.70 km) |
| Porvoo to Buhusi | 946.09 mi (1,522.58 km) |
