| Oulunsalo to Smolyan | 1,613.58 mi (2,596.80 km) |
| Oulunsalo to Sofia | 1,538.33 mi (2,475.70 km) |
| Oulunsalo to Sopot | 1,539.85 mi (2,478.14 km) |
| Oulunsalo to Sozopol | 1,558.31 mi (2,507.86 km) |
| Oulunsalo to Sredets | 1,561.92 mi (2,513.66 km) |
| Oulunsalo to Stamboliyski | 1,575.71 mi (2,535.86 km) |
| Oulunsalo to Stara Zagora | 1,554.63 mi (2,501.93 km) |
| Oulunsalo to Svilengrad | 1,600.95 mi (2,576.49 km) |
| Oulunsalo to Svishtov | 1,472.84 mi (2,370.30 km) |
| Oulunsalo to Targovishte | 1,498.86 mi (2,412.18 km) |
| Oulunsalo to Teteven | 1,521.86 mi (2,449.20 km) |
| Oulunsalo to Troyan | 1,523.75 mi (2,452.24 km) |
| Oulunsalo to Tryavna | 1,524.64 mi (2,453.68 km) |
| Oulunsalo to Tutrakan | 1,443.64 mi (2,323.31 km) |
| Oulunsalo to Varna | 1,503.61 mi (2,419.83 km) |
