| Cities | Distance |
|---|
| Olbia to Smolyan | 789.91 mi (1,271.24 km) |
| Olbia to Sofia | 721.98 mi (1,161.91 km) |
| Olbia to Sopot | 793.64 mi (1,277.25 km) |
| Olbia to Sozopol | 943.25 mi (1,518.01 km) |
| Olbia to Sredets | 917.71 mi (1,476.92 km) |
| Olbia to Stamboliyski | 781.14 mi (1,257.13 km) |
| Olbia to Stara Zagora | 838.73 mi (1,349.80 km) |
| Olbia to Svilengrad | 866.92 mi (1,395.17 km) |
| Olbia to Svishtov | 830.22 mi (1,336.10 km) |
| Olbia to Targovishte | 889.08 mi (1,430.84 km) |
| Olbia to Teteven | 770.63 mi (1,240.20 km) |
| Olbia to Troyan | 793.11 mi (1,276.39 km) |
| Olbia to Tryavna | 832.58 mi (1,339.91 km) |
| Olbia to Tutrakan | 896.83 mi (1,443.30 km) |
| Olbia to Varna | 955.89 mi (1,538.35 km) |
