| Nashua to Smolyan | 4,626.88 mi (7,446.24 km) |
| Nashua to Sofia | 4,524.40 mi (7,281.32 km) |
| Nashua to Sopot | 4,584.22 mi (7,377.59 km) |
| Nashua to Sozopol | 4,712.61 mi (7,584.21 km) |
| Nashua to Sredets | 4,695.53 mi (7,556.72 km) |
| Nashua to Stamboliyski | 4,597.00 mi (7,398.15 km) |
| Nashua to Stara Zagora | 4,629.71 mi (7,450.79 km) |
| Nashua to Svilengrad | 4,680.25 mi (7,532.14 km) |
| Nashua to Svishtov | 4,568.01 mi (7,351.50 km) |
| Nashua to Targovishte | 4,632.53 mi (7,455.33 km) |
| Nashua to Teteven | 4,553.56 mi (7,328.24 km) |
| Nashua to Troyan | 4,573.15 mi (7,359.77 km) |
| Nashua to Tryavna | 4,605.40 mi (7,411.67 km) |
| Nashua to Tutrakan | 4,600.03 mi (7,403.03 km) |
| Nashua to Varna | 4,686.71 mi (7,542.52 km) |
