| Kyustendil to Navodari | 329.64 mi (530.50 km) |
| Kyustendil to Negresti-Oas | 387.65 mi (623.86 km) |
| Kyustendil to Nehoiu | 278.48 mi (448.18 km) |
| Kyustendil to Ocna Mures | 289.63 mi (466.12 km) |
| Kyustendil to Odobesti | 324.47 mi (522.19 km) |
| Kyustendil to Odorheiu Secuiesc | 307.07 mi (494.18 km) |
| Kyustendil to Oltenita | 234.89 mi (378.02 km) |
| Kyustendil to Onesti | 340.93 mi (548.67 km) |
| Kyustendil to Oradea | 332.99 mi (535.89 km) |
| Kyustendil to Orastie | 247.76 mi (398.74 km) |
| Kyustendil to Oravita | 196.91 mi (316.89 km) |
| Kyustendil to Orsova | 169.34 mi (272.52 km) |
| Kyustendil to Otelu Rosu | 224.14 mi (360.72 km) |
| Kyustendil to Otopeni | 231.08 mi (371.89 km) |
| Kyustendil to Ovidiu | 325.83 mi (524.37 km) |
