| East Ridge to Smolyan | 5,534.85 mi (8,907.47 km) |
| East Ridge to Sofia | 5,432.01 mi (8,741.97 km) |
| East Ridge to Sopot | 5,490.95 mi (8,836.83 km) |
| East Ridge to Sozopol | 5,617.31 mi (9,040.18 km) |
| East Ridge to Sredets | 5,600.76 mi (9,013.55 km) |
| East Ridge to Stamboliyski | 5,504.48 mi (8,858.60 km) |
| East Ridge to Stara Zagora | 5,536.06 mi (8,909.42 km) |
| East Ridge to Svilengrad | 5,587.03 mi (8,991.45 km) |
| East Ridge to Svishtov | 5,472.97 mi (8,807.89 km) |
| East Ridge to Targovishte | 5,536.98 mi (8,910.90 km) |
| East Ridge to Teteven | 5,460.30 mi (8,787.50 km) |
| East Ridge to Troyan | 5,479.61 mi (8,818.58 km) |
| East Ridge to Tryavna | 5,511.30 mi (8,869.57 km) |
| East Ridge to Tutrakan | 5,503.16 mi (8,856.48 km) |
| East Ridge to Varna | 5,589.96 mi (8,996.17 km) |
