| Glenmont to Smolyan | 5,011.84 mi (8,065.77 km) |
| Glenmont to Sofia | 4,909.47 mi (7,901.02 km) |
| Glenmont to Sopot | 4,969.48 mi (7,997.60 km) |
| Glenmont to Sozopol | 5,098.11 mi (8,204.61 km) |
| Glenmont to Sredets | 5,080.99 mi (8,177.06 km) |
| Glenmont to Stamboliyski | 4,982.09 mi (8,017.90 km) |
| Glenmont to Stara Zagora | 5,015.03 mi (8,070.90 km) |
| Glenmont to Svilengrad | 5,065.50 mi (8,152.13 km) |
| Glenmont to Svishtov | 4,953.49 mi (7,971.88 km) |
| Glenmont to Targovishte | 5,018.05 mi (8,075.77 km) |
| Glenmont to Teteven | 4,938.82 mi (7,948.26 km) |
| Glenmont to Troyan | 4,958.45 mi (7,979.86 km) |
| Glenmont to Tryavna | 4,990.79 mi (8,031.89 km) |
| Glenmont to Tutrakan | 4,985.59 mi (8,023.53 km) |
| Glenmont to Varna | 5,072.27 mi (8,163.02 km) |
