| Drobak to Smolyan | 1,386.66 mi (2,231.61 km) |
| Drobak to Sofia | 1,289.72 mi (2,075.60 km) |
| Drobak to Sopot | 1,319.04 mi (2,122.79 km) |
| Drobak to Sozopol | 1,394.44 mi (2,244.14 km) |
| Drobak to Sredets | 1,387.78 mi (2,233.42 km) |
| Drobak to Stamboliyski | 1,348.12 mi (2,169.59 km) |
| Drobak to Stara Zagora | 1,350.46 mi (2,173.35 km) |
| Drobak to Svilengrad | 1,403.87 mi (2,259.31 km) |
| Drobak to Svishtov | 1,269.43 mi (2,042.96 km) |
| Drobak to Targovishte | 1,318.21 mi (2,121.46 km) |
| Drobak to Teteven | 1,292.79 mi (2,080.54 km) |
| Drobak to Troyan | 1,303.48 mi (2,097.75 km) |
| Drobak to Tryavna | 1,319.91 mi (2,124.20 km) |
| Drobak to Tutrakan | 1,269.11 mi (2,042.43 km) |
| Drobak to Varna | 1,349.60 mi (2,171.98 km) |
