| Mercerville to Smolyan | 4,863.82 mi (7,827.56 km) |
| Mercerville to Sofia | 4,761.54 mi (7,662.96 km) |
| Mercerville to Sopot | 4,821.75 mi (7,759.85 km) |
| Mercerville to Sozopol | 4,950.81 mi (7,967.56 km) |
| Mercerville to Sredets | 4,933.57 mi (7,939.82 km) |
| Mercerville to Stamboliyski | 4,834.19 mi (7,779.87 km) |
| Mercerville to Stara Zagora | 4,867.38 mi (7,833.28 km) |
| Mercerville to Svilengrad | 4,917.75 mi (7,914.35 km) |
| Mercerville to Svishtov | 4,806.15 mi (7,734.76 km) |
| Mercerville to Targovishte | 4,870.81 mi (7,838.81 km) |
| Mercerville to Teteven | 4,791.08 mi (7,710.51 km) |
| Mercerville to Troyan | 4,810.78 mi (7,742.21 km) |
| Mercerville to Tryavna | 4,843.24 mi (7,794.44 km) |
| Mercerville to Tutrakan | 4,838.63 mi (7,787.02 km) |
| Mercerville to Varna | 4,925.27 mi (7,926.46 km) |
