| Balvi to Smolyan | 1,080.32 mi (1,738.61 km) |
| Balvi to Sofia | 1,011.96 mi (1,628.59 km) |
| Balvi to Sopot | 1,006.69 mi (1,620.12 km) |
| Balvi to Sozopol | 1,017.01 mi (1,636.72 km) |
| Balvi to Sredets | 1,021.43 mi (1,643.83 km) |
| Balvi to Stamboliyski | 1,043.30 mi (1,679.02 km) |
| Balvi to Stara Zagora | 1,018.10 mi (1,638.48 km) |
| Balvi to Svilengrad | 1,062.74 mi (1,710.32 km) |
| Balvi to Svishtov | 937.56 mi (1,508.85 km) |
| Balvi to Targovishte | 959.68 mi (1,544.46 km) |
| Balvi to Teteven | 990.92 mi (1,594.73 km) |
| Balvi to Troyan | 990.81 mi (1,594.56 km) |
| Balvi to Tryavna | 988.69 mi (1,591.14 km) |
| Balvi to Tutrakan | 904.38 mi (1,455.47 km) |
| Balvi to Varna | 961.98 mi (1,548.16 km) |
