| Dublin to Smolyan | 1,640.38 mi (2,639.93 km) |
| Dublin to Sofia | 1,537.12 mi (2,473.76 km) |
| Dublin to Sopot | 1,595.64 mi (2,567.94 km) |
| Dublin to Sozopol | 1,723.86 mi (2,774.28 km) |
| Dublin to Sredets | 1,706.55 mi (2,746.43 km) |
| Dublin to Stamboliyski | 1,609.44 mi (2,590.15 km) |
| Dublin to Stara Zagora | 1,640.85 mi (2,640.69 km) |
| Dublin to Svilengrad | 1,691.71 mi (2,722.55 km) |
| Dublin to Svishtov | 1,579.16 mi (2,541.41 km) |
| Dublin to Targovishte | 1,643.98 mi (2,645.72 km) |
| Dublin to Teteven | 1,564.99 mi (2,518.60 km) |
| Dublin to Troyan | 1,584.35 mi (2,549.77 km) |
| Dublin to Tryavna | 1,616.38 mi (2,601.31 km) |
| Dublin to Tutrakan | 1,612.92 mi (2,595.75 km) |
| Dublin to Varna | 1,699.32 mi (2,734.79 km) |
