| West Columbia to Smolyan | 5,412.04 mi (8,709.84 km) |
| West Columbia to Sofia | 5,310.31 mi (8,546.12 km) |
| West Columbia to Sopot | 5,371.47 mi (8,644.54 km) |
| West Columbia to Sozopol | 5,502.21 mi (8,854.95 km) |
| West Columbia to Sredets | 5,484.58 mi (8,826.58 km) |
| West Columbia to Stamboliyski | 5,383.05 mi (8,663.19 km) |
| West Columbia to Stara Zagora | 5,417.44 mi (8,718.53 km) |
| West Columbia to Svilengrad | 5,467.35 mi (8,798.85 km) |
| West Columbia to Svishtov | 5,357.46 mi (8,621.99 km) |
| West Columbia to Targovishte | 5,422.44 mi (8,726.58 km) |
| West Columbia to Teteven | 5,340.82 mi (8,595.22 km) |
| West Columbia to Troyan | 5,360.78 mi (8,627.34 km) |
| West Columbia to Tryavna | 5,393.74 mi (8,680.39 km) |
| West Columbia to Tutrakan | 5,391.13 mi (8,676.19 km) |
| West Columbia to Varna | 5,477.65 mi (8,815.43 km) |
