| Ilhavo to Smolyan | 1,727.97 mi (2,780.90 km) |
| Ilhavo to Sofia | 1,648.37 mi (2,652.80 km) |
| Ilhavo to Sopot | 1,720.45 mi (2,768.79 km) |
| Ilhavo to Sozopol | 1,871.44 mi (3,011.80 km) |
| Ilhavo to Sredets | 1,846.89 mi (2,972.29 km) |
| Ilhavo to Stamboliyski | 1,713.97 mi (2,758.36 km) |
| Ilhavo to Stara Zagora | 1,767.77 mi (2,844.96 km) |
| Ilhavo to Svilengrad | 1,802.41 mi (2,900.69 km) |
| Ilhavo to Svishtov | 1,743.74 mi (2,806.28 km) |
| Ilhavo to Targovishte | 1,807.83 mi (2,909.42 km) |
| Ilhavo to Teteven | 1,694.06 mi (2,726.33 km) |
| Ilhavo to Troyan | 1,716.96 mi (2,763.17 km) |
| Ilhavo to Tryavna | 1,756.50 mi (2,826.81 km) |
| Ilhavo to Tutrakan | 1,804.10 mi (2,903.41 km) |
| Ilhavo to Varna | 1,874.75 mi (3,017.12 km) |
