| Mount Washington to Smolyan | 5,400.77 mi (8,691.69 km) |
| Mount Washington to Sofia | 5,297.29 mi (8,525.16 km) |
| Mount Washington to Sopot | 5,354.43 mi (8,617.13 km) |
| Mount Washington to Sozopol | 5,477.29 mi (8,814.84 km) |
| Mount Washington to Sredets | 5,461.56 mi (8,789.54 km) |
| Mount Washington to Stamboliyski | 5,369.40 mi (8,641.22 km) |
| Mount Washington to Stara Zagora | 5,398.80 mi (8,688.53 km) |
| Mount Washington to Svilengrad | 5,450.46 mi (8,771.67 km) |
| Mount Washington to Svishtov | 5,333.53 mi (8,583.49 km) |
| Mount Washington to Targovishte | 5,396.70 mi (8,685.15 km) |
| Mount Washington to Teteven | 5,323.84 mi (8,567.89 km) |
| Mount Washington to Troyan | 5,342.62 mi (8,598.12 km) |
| Mount Washington to Tryavna | 5,373.30 mi (8,647.48 km) |
| Mount Washington to Tutrakan | 5,361.14 mi (8,627.93 km) |
| Mount Washington to Varna | 5,447.98 mi (8,767.67 km) |
