| Shannon to Smolyan | 1,733.77 mi (2,790.24 km) |
| Shannon to Sofia | 1,631.26 mi (2,625.27 km) |
| Shannon to Sopot | 1,691.57 mi (2,722.31 km) |
| Shannon to Sozopol | 1,822.80 mi (2,933.52 km) |
| Shannon to Sredets | 1,804.80 mi (2,904.54 km) |
| Shannon to Stamboliyski | 1,703.88 mi (2,742.14 km) |
| Shannon to Stara Zagora | 1,737.42 mi (2,796.11 km) |
| Shannon to Svilengrad | 1,787.52 mi (2,876.74 km) |
| Shannon to Svishtov | 1,678.01 mi (2,700.49 km) |
| Shannon to Targovishte | 1,743.41 mi (2,805.74 km) |
| Shannon to Teteven | 1,660.91 mi (2,672.98 km) |
| Shannon to Troyan | 1,680.77 mi (2,704.95 km) |
| Shannon to Tryavna | 1,713.73 mi (2,757.99 km) |
| Shannon to Tutrakan | 1,714.07 mi (2,758.52 km) |
| Shannon to Varna | 1,800.09 mi (2,896.97 km) |
