| Lake Oswego to Smolyan | 6,098.34 mi (9,814.33 km) |
| Lake Oswego to Sofia | 6,000.09 mi (9,656.21 km) |
| Lake Oswego to Sopot | 6,031.09 mi (9,706.09 km) |
| Lake Oswego to Sozopol | 6,100.56 mi (9,817.91 km) |
| Lake Oswego to Sredets | 6,095.96 mi (9,810.50 km) |
| Lake Oswego to Stamboliyski | 6,059.93 mi (9,752.51 km) |
| Lake Oswego to Stara Zagora | 6,062.08 mi (9,755.98 km) |
| Lake Oswego to Svilengrad | 6,115.26 mi (9,841.56 km) |
| Lake Oswego to Svishtov | 5,980.52 mi (9,624.72 km) |
| Lake Oswego to Targovishte | 6,026.72 mi (9,699.07 km) |
| Lake Oswego to Teteven | 6,004.72 mi (9,663.66 km) |
| Lake Oswego to Troyan | 6,015.53 mi (9,681.05 km) |
| Lake Oswego to Tryavna | 6,031.43 mi (9,706.64 km) |
| Lake Oswego to Tutrakan | 5,975.73 mi (9,617.01 km) |
| Lake Oswego to Varna | 6,052.50 mi (9,740.55 km) |
