| Olecko to Noventa Vicentina | 776.70 mi (1,249.97 km) |
| Olecko to Novi di Modena | 816.47 mi (1,313.99 km) |
| Olecko to Novi Ligure | 886.37 mi (1,426.47 km) |
| Olecko to Nuoro | 1,127.59 mi (1,814.68 km) |
| Olecko to Occhiobello | 796.00 mi (1,281.03 km) |
| Olecko to Oderzo | 722.03 mi (1,161.99 km) |
| Olecko to Oggiono | 814.45 mi (1,310.73 km) |
| Olecko to Olbia | 1,087.05 mi (1,749.44 km) |
| Olecko to Oleggio | 846.76 mi (1,362.73 km) |
| Olecko to Olgiate Comasco | 826.61 mi (1,330.30 km) |
| Olecko to Olgiate Olona | 837.05 mi (1,347.10 km) |
| Olecko to Omegna | 839.85 mi (1,351.60 km) |
| Olecko to Opera | 839.68 mi (1,351.34 km) |
| Olecko to Oppeano | 785.60 mi (1,264.31 km) |
| Olecko to Orbassano | 912.75 mi (1,468.93 km) |
