| Kalajoki to Smolyan | 1,567.56 mi (2,522.74 km) |
| Kalajoki to Sofia | 1,490.32 mi (2,398.43 km) |
| Kalajoki to Sopot | 1,493.90 mi (2,404.21 km) |
| Kalajoki to Sozopol | 1,516.97 mi (2,441.33 km) |
| Kalajoki to Sredets | 1,519.76 mi (2,445.82 km) |
| Kalajoki to Stamboliyski | 1,529.45 mi (2,461.40 km) |
| Kalajoki to Stara Zagora | 1,510.04 mi (2,430.18 km) |
| Kalajoki to Svilengrad | 1,557.18 mi (2,506.04 km) |
| Kalajoki to Svishtov | 1,427.83 mi (2,297.87 km) |
| Kalajoki to Targovishte | 1,455.79 mi (2,342.88 km) |
| Kalajoki to Teteven | 1,475.19 mi (2,374.10 km) |
| Kalajoki to Troyan | 1,477.76 mi (2,378.22 km) |
| Kalajoki to Tryavna | 1,479.85 mi (2,381.58 km) |
| Kalajoki to Tutrakan | 1,400.70 mi (2,254.22 km) |
| Kalajoki to Varna | 1,462.75 mi (2,354.06 km) |
