| Southwater to Smolyan | 1,352.63 mi (2,176.85 km) |
| Southwater to Sofia | 1,250.33 mi (2,012.20 km) |
| Southwater to Sopot | 1,311.26 mi (2,110.26 km) |
| Southwater to Sozopol | 1,444.29 mi (2,324.36 km) |
| Southwater to Sredets | 1,425.77 mi (2,294.55 km) |
| Southwater to Stamboliyski | 1,323.00 mi (2,129.17 km) |
| Southwater to Stara Zagora | 1,357.40 mi (2,184.53 km) |
| Southwater to Svilengrad | 1,407.11 mi (2,264.52 km) |
| Southwater to Svishtov | 1,299.57 mi (2,091.46 km) |
| Southwater to Targovishte | 1,365.39 mi (2,197.39 km) |
| Southwater to Teteven | 1,280.62 mi (2,060.95 km) |
| Southwater to Troyan | 1,300.71 mi (2,093.30 km) |
| Southwater to Tryavna | 1,334.18 mi (2,147.15 km) |
| Southwater to Tutrakan | 1,337.84 mi (2,153.05 km) |
| Southwater to Varna | 1,423.33 mi (2,290.63 km) |
