| Olecko to Oerlinghausen | 591.61 mi (952.10 km) |
| Olecko to Oestrich-Winkel | 675.00 mi (1,086.31 km) |
| Olecko to Offenburg | 736.02 mi (1,184.51 km) |
| Olecko to Oftersheim | 675.74 mi (1,087.50 km) |
| Olecko to Ohrdruf | 542.08 mi (872.40 km) |
| Olecko to Ohringen | 648.60 mi (1,043.82 km) |
| Olecko to Olbernhau | 450.91 mi (725.67 km) |
| Olecko to Olching | 629.38 mi (1,012.89 km) |
| Olecko to Oldenburg | 588.10 mi (946.46 km) |
| Olecko to Oldenburg in Holstein | 469.72 mi (755.94 km) |
| Olecko to Olfen | 649.01 mi (1,044.47 km) |
| Olecko to Olpe | 649.41 mi (1,045.12 km) |
| Olecko to Olsberg | 614.37 mi (988.73 km) |
| Olecko to Oranienburg | 391.43 mi (629.95 km) |
| Olecko to Ortenberg | 622.26 mi (1,001.43 km) |
