| Riviera Beach to Karlovo | 5,675.95 mi (9,134.56 km) |
| Riviera Beach to Karnobat | 5,771.98 mi (9,289.10 km) |
| Riviera Beach to Kavarna | 5,801.67 mi (9,336.88 km) |
| Riviera Beach to Kazanlak | 5,703.06 mi (9,178.19 km) |
| Riviera Beach to Knezha | 5,615.22 mi (9,036.82 km) |
| Riviera Beach to Kostinbrod | 5,599.51 mi (9,011.54 km) |
| Riviera Beach to Kozloduy | 5,590.46 mi (8,996.98 km) |
| Riviera Beach to Kyustendil | 5,593.06 mi (9,001.17 km) |
| Riviera Beach to Levski | 5,665.70 mi (9,118.06 km) |
| Riviera Beach to Lom | 5,567.33 mi (8,959.75 km) |
| Riviera Beach to Lovech | 5,655.33 mi (9,101.38 km) |
| Riviera Beach to Lukovit | 5,628.91 mi (9,058.85 km) |
| Riviera Beach to Lyaskovets | 5,700.34 mi (9,173.81 km) |
| Riviera Beach to Mezdra | 5,609.97 mi (9,028.37 km) |
| Riviera Beach to Momchilgrad | 5,741.09 mi (9,239.39 km) |
