| Attleboro to Smolyan | 4,652.17 mi (7,486.94 km) |
| Attleboro to Sofia | 4,549.97 mi (7,322.48 km) |
| Attleboro to Sopot | 4,610.36 mi (7,419.66 km) |
| Attleboro to Sozopol | 4,739.84 mi (7,628.04 km) |
| Attleboro to Sredets | 4,722.50 mi (7,600.12 km) |
| Attleboro to Stamboliyski | 4,622.64 mi (7,439.42 km) |
| Attleboro to Stara Zagora | 4,656.07 mi (7,493.21 km) |
| Attleboro to Svilengrad | 4,706.34 mi (7,574.13 km) |
| Attleboro to Svishtov | 4,595.15 mi (7,395.19 km) |
| Attleboro to Targovishte | 4,659.91 mi (7,499.40 km) |
| Attleboro to Teteven | 4,579.70 mi (7,370.32 km) |
| Attleboro to Troyan | 4,599.46 mi (7,402.11 km) |
| Attleboro to Tryavna | 4,632.03 mi (7,454.53 km) |
| Attleboro to Tutrakan | 4,628.03 mi (7,448.09 km) |
| Attleboro to Varna | 4,714.63 mi (7,587.46 km) |
