| Rockville Centre to Smolyan | 4,801.98 mi (7,728.04 km) |
| Rockville Centre to Sofia | 4,699.76 mi (7,563.53 km) |
| Rockville Centre to Sopot | 4,760.09 mi (7,660.63 km) |
| Rockville Centre to Sozopol | 4,889.42 mi (7,868.76 km) |
| Rockville Centre to Sredets | 4,872.12 mi (7,840.91 km) |
| Rockville Centre to Stamboliyski | 4,772.42 mi (7,680.47 km) |
| Rockville Centre to Stara Zagora | 4,805.77 mi (7,734.14 km) |
| Rockville Centre to Svilengrad | 4,856.08 mi (7,815.11 km) |
| Rockville Centre to Svishtov | 4,744.74 mi (7,635.92 km) |
| Rockville Centre to Targovishte | 4,809.46 mi (7,740.07 km) |
| Rockville Centre to Teteven | 4,729.43 mi (7,611.28 km) |
| Rockville Centre to Troyan | 4,749.17 mi (7,643.04 km) |
| Rockville Centre to Tryavna | 4,781.70 mi (7,695.40 km) |
| Rockville Centre to Tutrakan | 4,777.45 mi (7,688.56 km) |
| Rockville Centre to Varna | 4,864.06 mi (7,827.96 km) |
