| East Providence to Smolyan | 4,659.82 mi (7,499.25 km) |
| East Providence to Sofia | 4,557.65 mi (7,334.83 km) |
| East Providence to Sopot | 4,618.09 mi (7,432.10 km) |
| East Providence to Sozopol | 4,747.68 mi (7,640.65 km) |
| East Providence to Sredets | 4,730.31 mi (7,612.69 km) |
| East Providence to Stamboliyski | 4,630.32 mi (7,451.79 km) |
| East Providence to Stara Zagora | 4,663.82 mi (7,505.69 km) |
| East Providence to Svilengrad | 4,714.07 mi (7,586.56 km) |
| East Providence to Svishtov | 4,602.98 mi (7,407.78 km) |
| East Providence to Targovishte | 4,667.76 mi (7,512.03 km) |
| East Providence to Teteven | 4,587.43 mi (7,382.76 km) |
| East Providence to Troyan | 4,607.20 mi (7,414.58 km) |
| East Providence to Tryavna | 4,639.81 mi (7,467.05 km) |
| East Providence to Tutrakan | 4,635.94 mi (7,460.82 km) |
| East Providence to Varna | 4,722.53 mi (7,600.17 km) |
