| North Valley to Smolyan | 6,303.07 mi (10,143.82 km) |
| North Valley to Sofia | 6,199.02 mi (9,976.36 km) |
| North Valley to Sopot | 6,246.46 mi (10,052.70 km) |
| North Valley to Sozopol | 6,349.38 mi (10,218.34 km) |
| North Valley to Sredets | 6,338.11 mi (10,200.21 km) |
| North Valley to Stamboliyski | 6,267.83 mi (10,087.09 km) |
| North Valley to Stara Zagora | 6,286.24 mi (10,116.72 km) |
| North Valley to Svilengrad | 6,339.99 mi (10,203.22 km) |
| North Valley to Svishtov | 6,212.03 mi (9,997.30 km) |
| North Valley to Targovishte | 6,269.50 mi (10,089.79 km) |
| North Valley to Teteven | 6,216.85 mi (10,005.05 km) |
| North Valley to Troyan | 6,232.69 mi (10,030.55 km) |
| North Valley to Tryavna | 6,257.78 mi (10,070.93 km) |
| North Valley to Tutrakan | 6,226.10 mi (10,019.94 km) |
| North Valley to Varna | 6,310.92 mi (10,156.44 km) |
