| Porto de Mos to Navodari | 1,933.30 mi (3,111.35 km) |
| Porto de Mos to Negresti-Oas | 1,693.28 mi (2,725.08 km) |
| Porto de Mos to Nehoiu | 1,818.10 mi (2,925.95 km) |
| Porto de Mos to Ocna Mures | 1,703.14 mi (2,740.93 km) |
| Porto de Mos to Odobesti | 1,855.05 mi (2,985.41 km) |
| Porto de Mos to Odorheiu Secuiesc | 1,771.45 mi (2,850.87 km) |
| Porto de Mos to Oltenita | 1,836.42 mi (2,955.44 km) |
| Porto de Mos to Onesti | 1,841.32 mi (2,963.33 km) |
| Porto de Mos to Oradea | 1,616.46 mi (2,601.45 km) |
| Porto de Mos to Orastie | 1,669.13 mi (2,686.20 km) |
| Porto de Mos to Oravita | 1,592.73 mi (2,563.26 km) |
| Porto de Mos to Orsova | 1,626.67 mi (2,617.88 km) |
| Porto de Mos to Otelu Rosu | 1,626.94 mi (2,618.30 km) |
| Porto de Mos to Otopeni | 1,807.27 mi (2,908.52 km) |
| Porto de Mos to Ovidiu | 1,930.89 mi (3,107.47 km) |
