| Milford Haven to Smolyan | 1,560.01 mi (2,510.60 km) |
| Milford Haven to Sofia | 1,457.89 mi (2,346.25 km) |
| Milford Haven to Sopot | 1,519.03 mi (2,444.64 km) |
| Milford Haven to Sozopol | 1,652.02 mi (2,658.67 km) |
| Milford Haven to Sredets | 1,633.55 mi (2,628.95 km) |
| Milford Haven to Stamboliyski | 1,530.60 mi (2,463.26 km) |
| Milford Haven to Stara Zagora | 1,565.21 mi (2,518.96 km) |
| Milford Haven to Svilengrad | 1,614.85 mi (2,598.86 km) |
| Milford Haven to Svishtov | 1,507.28 mi (2,425.73 km) |
| Milford Haven to Targovishte | 1,573.04 mi (2,531.56 km) |
| Milford Haven to Teteven | 1,488.39 mi (2,395.34 km) |
| Milford Haven to Troyan | 1,508.52 mi (2,427.72 km) |
| Milford Haven to Tryavna | 1,541.99 mi (2,481.60 km) |
| Milford Haven to Tutrakan | 1,545.09 mi (2,486.58 km) |
| Milford Haven to Varna | 1,630.72 mi (2,624.39 km) |
