| Rio Maior to Karlovo | 1,762.68 mi (2,836.76 km) |
| Rio Maior to Karnobat | 1,872.97 mi (3,014.26 km) |
| Rio Maior to Kavarna | 1,936.18 mi (3,115.98 km) |
| Rio Maior to Kazanlak | 1,792.87 mi (2,885.34 km) |
| Rio Maior to Knezha | 1,723.15 mi (2,773.15 km) |
| Rio Maior to Kostinbrod | 1,681.39 mi (2,705.94 km) |
| Rio Maior to Kozloduy | 1,705.18 mi (2,744.23 km) |
| Rio Maior to Kyustendil | 1,656.34 mi (2,665.62 km) |
| Rio Maior to Levski | 1,776.16 mi (2,858.45 km) |
| Rio Maior to Lom | 1,680.42 mi (2,704.38 km) |
| Rio Maior to Lovech | 1,756.05 mi (2,826.09 km) |
| Rio Maior to Lukovit | 1,728.12 mi (2,781.14 km) |
| Rio Maior to Lyaskovets | 1,806.51 mi (2,907.30 km) |
| Rio Maior to Mezdra | 1,704.77 mi (2,743.57 km) |
| Rio Maior to Momchilgrad | 1,800.98 mi (2,898.40 km) |
