| Astoria to Smolyan | 6,070.48 mi (9,769.50 km) |
| Astoria to Sofia | 5,972.87 mi (9,612.40 km) |
| Astoria to Sopot | 6,002.70 mi (9,660.41 km) |
| Astoria to Sozopol | 6,069.82 mi (9,768.42 km) |
| Astoria to Sredets | 6,065.66 mi (9,761.73 km) |
| Astoria to Stamboliyski | 6,031.96 mi (9,707.50 km) |
| Astoria to Stara Zagora | 6,033.04 mi (9,709.24 km) |
| Astoria to Svilengrad | 6,086.05 mi (9,794.54 km) |
| Astoria to Svishtov | 5,951.21 mi (9,577.54 km) |
| Astoria to Targovishte | 5,996.56 mi (9,650.52 km) |
| Astoria to Teteven | 5,976.61 mi (9,618.43 km) |
| Astoria to Troyan | 5,987.06 mi (9,635.25 km) |
| Astoria to Tryavna | 6,002.32 mi (9,659.80 km) |
| Astoria to Tutrakan | 5,945.20 mi (9,567.87 km) |
| Astoria to Varna | 6,021.24 mi (9,690.26 km) |
