| Richland to Karlovo | 5,910.02 mi (9,511.26 km) |
| Richland to Karnobat | 5,954.42 mi (9,582.72 km) |
| Richland to Kavarna | 5,929.01 mi (9,541.81 km) |
| Richland to Kazanlak | 5,923.88 mi (9,533.57 km) |
| Richland to Knezha | 5,841.07 mi (9,400.29 km) |
| Richland to Kostinbrod | 5,865.69 mi (9,439.91 km) |
| Richland to Kozloduy | 5,815.99 mi (9,359.93 km) |
| Richland to Kyustendil | 5,887.52 mi (9,475.05 km) |
| Richland to Levski | 5,871.01 mi (9,448.49 km) |
| Richland to Lom | 5,802.95 mi (9,338.94 km) |
| Richland to Lovech | 5,877.17 mi (9,458.40 km) |
| Richland to Lukovit | 5,861.67 mi (9,433.45 km) |
| Richland to Lyaskovets | 5,899.66 mi (9,494.59 km) |
| Richland to Mezdra | 5,855.05 mi (9,422.79 km) |
| Richland to Momchilgrad | 5,992.82 mi (9,644.52 km) |
