| Cities | Distance |
|---|---|
| Portici to Navodari | 764.26 mi (1,229.96 km) |
| Portici to Negresti-Oas | 661.44 mi (1,064.48 km) |
| Portici to Nehoiu | 679.16 mi (1,093.01 km) |
| Portici to Ocna Mures | 611.57 mi (984.23 km) |
| Portici to Odobesti | 724.34 mi (1,165.71 km) |
| Portici to Odorheiu Secuiesc | 666.26 mi (1,072.25 km) |
| Portici to Oltenita | 665.43 mi (1,070.90 km) |
| Portici to Onesti | 725.87 mi (1,168.18 km) |
| Portici to Oradea | 572.87 mi (921.95 km) |
| Portici to Orastie | 564.23 mi (908.04 km) |
| Portici to Oravita | 471.98 mi (759.58 km) |
| Portici to Orsova | 489.25 mi (787.37 km) |
| Portici to Otelu Rosu | 517.63 mi (833.05 km) |
| Portici to Otopeni | 648.29 mi (1,043.33 km) |
| Portici to Ovidiu | 760.88 mi (1,224.51 km) |