| Olecko to Olivenza | 1,744.14 mi (2,806.92 km) |
| Olecko to Olot | 1,226.22 mi (1,973.42 km) |
| Olecko to Onate | 1,358.81 mi (2,186.80 km) |
| Olecko to Onda | 1,435.95 mi (2,310.94 km) |
| Olecko to Onteniente | 1,508.69 mi (2,428.00 km) |
| Olecko to Orihuela | 1,560.14 mi (2,510.80 km) |
| Olecko to Osuna | 1,747.83 mi (2,812.86 km) |
| Olecko to Ourense | 1,597.43 mi (2,570.81 km) |
| Olecko to Oviedo | 1,473.74 mi (2,371.76 km) |
| Olecko to Paiporta | 1,469.70 mi (2,365.25 km) |
| Olecko to Pajara | 2,552.18 mi (4,107.33 km) |
| Olecko to Palafolls | 1,244.39 mi (2,002.66 km) |
| Olecko to Palafrugell | 1,217.60 mi (1,959.54 km) |
| Olecko to Palamos | 1,222.53 mi (1,967.46 km) |
| Olecko to Palencia | 1,485.55 mi (2,390.76 km) |
