| Eiras to Smolyan | 1,721.40 mi (2,770.33 km) |
| Eiras to Sofia | 1,642.94 mi (2,644.06 km) |
| Eiras to Sopot | 1,715.08 mi (2,760.15 km) |
| Eiras to Sozopol | 1,866.12 mi (3,003.23 km) |
| Eiras to Sredets | 1,841.45 mi (2,963.52 km) |
| Eiras to Stamboliyski | 1,707.99 mi (2,748.75 km) |
| Eiras to Stara Zagora | 1,762.25 mi (2,836.07 km) |
| Eiras to Svilengrad | 1,796.23 mi (2,890.75 km) |
| Eiras to Svishtov | 1,739.51 mi (2,799.47 km) |
| Eiras to Targovishte | 1,803.28 mi (2,902.10 km) |
| Eiras to Teteven | 1,688.96 mi (2,718.11 km) |
| Eiras to Troyan | 1,711.85 mi (2,754.95 km) |
| Eiras to Tryavna | 1,751.44 mi (2,818.66 km) |
| Eiras to Tutrakan | 1,800.42 mi (2,897.50 km) |
| Eiras to Varna | 1,870.28 mi (3,009.93 km) |
