| Seinajoki to Karlovo | 1,394.37 mi (2,244.02 km) |
| Seinajoki to Karnobat | 1,402.87 mi (2,257.70 km) |
| Seinajoki to Kavarna | 1,355.62 mi (2,181.66 km) |
| Seinajoki to Kazanlak | 1,397.80 mi (2,249.54 km) |
| Seinajoki to Knezha | 1,333.86 mi (2,146.64 km) |
| Seinajoki to Kostinbrod | 1,380.22 mi (2,221.25 km) |
| Seinajoki to Kozloduy | 1,313.84 mi (2,114.42 km) |
| Seinajoki to Kyustendil | 1,417.01 mi (2,280.45 km) |
| Seinajoki to Levski | 1,345.30 mi (2,165.05 km) |
| Seinajoki to Lom | 1,310.53 mi (2,109.09 km) |
| Seinajoki to Lovech | 1,360.27 mi (2,189.14 km) |
| Seinajoki to Lukovit | 1,354.71 mi (2,180.19 km) |
| Seinajoki to Lyaskovets | 1,365.49 mi (2,197.55 km) |
| Seinajoki to Mezdra | 1,357.55 mi (2,184.77 km) |
| Seinajoki to Momchilgrad | 1,472.58 mi (2,369.89 km) |
