| Porvoo to Karlovo | 1,226.99 mi (1,974.65 km) |
| Porvoo to Karnobat | 1,228.42 mi (1,976.96 km) |
| Porvoo to Kavarna | 1,177.17 mi (1,894.47 km) |
| Porvoo to Kazanlak | 1,228.37 mi (1,976.87 km) |
| Porvoo to Knezha | 1,169.15 mi (1,881.56 km) |
| Porvoo to Kostinbrod | 1,218.83 mi (1,961.51 km) |
| Porvoo to Kozloduy | 1,150.52 mi (1,851.58 km) |
| Porvoo to Kyustendil | 1,257.64 mi (2,023.97 km) |
| Porvoo to Levski | 1,176.71 mi (1,893.73 km) |
| Porvoo to Lom | 1,149.22 mi (1,849.49 km) |
| Porvoo to Lovech | 1,193.19 mi (1,920.25 km) |
| Porvoo to Lukovit | 1,189.66 mi (1,914.58 km) |
| Porvoo to Lyaskovets | 1,194.93 mi (1,923.05 km) |
| Porvoo to Mezdra | 1,194.30 mi (1,922.03 km) |
| Porvoo to Momchilgrad | 1,303.22 mi (2,097.33 km) |
