| Osuna to Smolyan | 1,610.65 mi (2,592.09 km) |
| Osuna to Sofia | 1,544.16 mi (2,485.08 km) |
| Osuna to Sopot | 1,615.89 mi (2,600.52 km) |
| Osuna to Sozopol | 1,765.44 mi (2,841.20 km) |
| Osuna to Sredets | 1,739.86 mi (2,800.04 km) |
| Osuna to Stamboliyski | 1,603.11 mi (2,579.95 km) |
| Osuna to Stara Zagora | 1,660.94 mi (2,673.03 km) |
| Osuna to Svilengrad | 1,688.18 mi (2,716.86 km) |
| Osuna to Svishtov | 1,650.91 mi (2,656.88 km) |
| Osuna to Targovishte | 1,710.81 mi (2,753.29 km) |
| Osuna to Teteven | 1,592.65 mi (2,563.13 km) |
| Osuna to Troyan | 1,615.21 mi (2,599.42 km) |
| Osuna to Tryavna | 1,654.72 mi (2,663.02 km) |
| Osuna to Tutrakan | 1,716.40 mi (2,762.28 km) |
| Osuna to Varna | 1,777.75 mi (2,861.02 km) |
