| Cities | Distance |
|---|
| Opera to Karlovo | 796.09 mi (1,281.18 km) |
| Opera to Karnobat | 901.13 mi (1,450.22 km) |
| Opera to Kavarna | 950.83 mi (1,530.21 km) |
| Opera to Kazanlak | 825.19 mi (1,328.01 km) |
| Opera to Knezha | 743.70 mi (1,196.87 km) |
| Opera to Kostinbrod | 715.90 mi (1,152.13 km) |
| Opera to Kozloduy | 721.85 mi (1,161.70 km) |
| Opera to Kyustendil | 703.53 mi (1,132.23 km) |
| Opera to Levski | 796.94 mi (1,282.55 km) |
| Opera to Lom | 697.14 mi (1,121.94 km) |
| Opera to Lovech | 781.30 mi (1,257.38 km) |
| Opera to Lukovit | 753.43 mi (1,212.53 km) |
| Opera to Lyaskovets | 830.27 mi (1,336.19 km) |
| Opera to Mezdra | 731.94 mi (1,177.95 km) |
| Opera to Momchilgrad | 853.16 mi (1,373.03 km) |
