| Cities | Distance |
|---|---|
| Olecko to Navodari | 724.98 mi (1,166.74 km) |
| Olecko to Negresti-Oas | 427.77 mi (688.43 km) |
| Olecko to Nehoiu | 623.15 mi (1,002.87 km) |
| Olecko to Ocna Mures | 531.49 mi (855.34 km) |
| Olecko to Odobesti | 605.93 mi (975.15 km) |
| Olecko to Odorheiu Secuiesc | 547.46 mi (881.06 km) |
| Olecko to Oltenita | 711.99 mi (1,145.84 km) |
| Olecko to Onesti | 569.20 mi (916.05 km) |
| Olecko to Oradea | 481.63 mi (775.11 km) |
| Olecko to Orastie | 566.26 mi (911.31 km) |
| Olecko to Oravita | 622.42 mi (1,001.68 km) |
| Olecko to Orsova | 643.14 mi (1,035.03 km) |
| Olecko to Otelu Rosu | 588.35 mi (946.85 km) |
| Olecko to Otopeni | 674.47 mi (1,085.45 km) |
| Olecko to Ovidiu | 727.39 mi (1,170.63 km) |