| Porvoo to Blace | 1,195.81 mi (1,924.47 km) |
| Porvoo to Bogatic | 1,104.82 mi (1,778.04 km) |
| Porvoo to Bojnik | 1,212.15 mi (1,950.77 km) |
| Porvoo to Boljevac | 1,155.19 mi (1,859.10 km) |
| Porvoo to Bor | 1,133.37 mi (1,823.99 km) |
| Porvoo to Borca | 1,093.85 mi (1,760.39 km) |
| Porvoo to Bosilegrad | 1,243.60 mi (2,001.39 km) |
| Porvoo to Brus | 1,191.09 mi (1,916.87 km) |
| Porvoo to Bujanovac | 1,249.48 mi (2,010.84 km) |
| Porvoo to Cacak | 1,161.38 mi (1,869.06 km) |
| Porvoo to Cajetina | 1,176.27 mi (1,893.03 km) |
| Porvoo to Cicevac | 1,165.56 mi (1,875.79 km) |
| Porvoo to Coka | 1,024.06 mi (1,648.07 km) |
| Porvoo to Crna Trava | 1,223.12 mi (1,968.42 km) |
| Porvoo to Crvenka | 1,049.22 mi (1,688.55 km) |
