| Lake Oswego to Karlovo | 6,032.59 mi (9,708.52 km) |
| Lake Oswego to Karnobat | 6,073.75 mi (9,774.75 km) |
| Lake Oswego to Kavarna | 6,045.61 mi (9,729.47 km) |
| Lake Oswego to Kazanlak | 6,045.60 mi (9,729.45 km) |
| Lake Oswego to Knezha | 5,963.96 mi (9,598.07 km) |
| Lake Oswego to Kostinbrod | 5,990.42 mi (9,640.64 km) |
| Lake Oswego to Kozloduy | 5,939.14 mi (9,558.12 km) |
| Lake Oswego to Kyustendil | 6,013.48 mi (9,677.76 km) |
| Lake Oswego to Levski | 5,992.49 mi (9,643.98 km) |
| Lake Oswego to Lom | 5,926.76 mi (9,538.20 km) |
| Lake Oswego to Lovech | 5,999.46 mi (9,655.19 km) |
| Lake Oswego to Lukovit | 5,984.70 mi (9,631.45 km) |
| Lake Oswego to Lyaskovets | 6,020.50 mi (9,689.06 km) |
| Lake Oswego to Mezdra | 5,978.79 mi (9,621.94 km) |
| Lake Oswego to Momchilgrad | 6,115.43 mi (9,841.83 km) |
