| Glen Burnie to Smolyan | 4,989.91 mi (8,030.48 km) |
| Glen Burnie to Sofia | 4,887.59 mi (7,865.82 km) |
| Glen Burnie to Sopot | 4,947.72 mi (7,962.58 km) |
| Glen Burnie to Sozopol | 5,076.58 mi (8,169.97 km) |
| Glen Burnie to Sredets | 5,059.40 mi (8,142.32 km) |
| Glen Burnie to Stamboliyski | 4,960.23 mi (7,982.72 km) |
| Glen Burnie to Stara Zagora | 4,993.31 mi (8,035.96 km) |
| Glen Burnie to Svilengrad | 5,043.73 mi (8,117.09 km) |
| Glen Burnie to Svishtov | 4,931.95 mi (7,937.20 km) |
| Glen Burnie to Targovishte | 4,996.55 mi (8,041.17 km) |
| Glen Burnie to Teteven | 4,917.06 mi (7,913.24 km) |
| Glen Burnie to Troyan | 4,936.73 mi (7,944.89 km) |
| Glen Burnie to Tryavna | 4,969.13 mi (7,997.04 km) |
| Glen Burnie to Tutrakan | 4,964.23 mi (7,989.16 km) |
| Glen Burnie to Varna | 5,050.89 mi (8,128.62 km) |
