| Oak Ridge to Karlovo | 5,409.08 mi (8,705.08 km) |
| Oak Ridge to Karnobat | 5,495.15 mi (8,843.59 km) |
| Oak Ridge to Kavarna | 5,511.46 mi (8,869.83 km) |
| Oak Ridge to Kazanlak | 5,433.73 mi (8,744.74 km) |
| Oak Ridge to Knezha | 5,343.71 mi (8,599.87 km) |
| Oak Ridge to Kostinbrod | 5,338.22 mi (8,591.04 km) |
| Oak Ridge to Kozloduy | 5,317.88 mi (8,558.29 km) |
| Oak Ridge to Kyustendil | 5,339.18 mi (8,592.59 km) |
| Oak Ridge to Levski | 5,390.72 mi (8,675.53 km) |
| Oak Ridge to Lom | 5,296.52 mi (8,523.92 km) |
| Oak Ridge to Lovech | 5,384.36 mi (8,665.30 km) |
| Oak Ridge to Lukovit | 5,359.81 mi (8,625.77 km) |
| Oak Ridge to Lyaskovets | 5,425.15 mi (8,730.94 km) |
| Oak Ridge to Mezdra | 5,343.41 mi (8,599.39 km) |
| Oak Ridge to Momchilgrad | 5,481.58 mi (8,821.75 km) |
