| Constanta to Nowy Dwor Mazowiecki | 676.33 mi (1,088.44 km) |
| Constanta to Nowy Sacz | 531.01 mi (854.59 km) |
| Constanta to Nowy Targ | 547.17 mi (880.59 km) |
| Constanta to Nowy Tomysl | 802.84 mi (1,292.04 km) |
| Constanta to Nysa | 684.18 mi (1,101.08 km) |
| Constanta to Oborniki | 796.32 mi (1,281.56 km) |
| Constanta to Oborniki Slaskie | 733.28 mi (1,180.10 km) |
| Constanta to Olawa | 704.22 mi (1,133.34 km) |
| Constanta to Olecko | 735.34 mi (1,183.42 km) |
| Constanta to Olesnica | 712.69 mi (1,146.96 km) |
| Constanta to Olesno | 663.75 mi (1,068.20 km) |
| Constanta to Olkusz | 598.81 mi (963.69 km) |
| Constanta to Olsztyn | 758.96 mi (1,221.43 km) |
| Constanta to Opalenica | 793.37 mi (1,276.80 km) |
| Constanta to Opoczno | 630.36 mi (1,014.46 km) |
