| Montesarchio to Navodari | 743.60 mi (1,196.71 km) |
| Montesarchio to Negresti-Oas | 638.57 mi (1,027.67 km) |
| Montesarchio to Nehoiu | 657.30 mi (1,057.82 km) |
| Montesarchio to Ocna Mures | 588.82 mi (947.62 km) |
| Montesarchio to Odobesti | 702.36 mi (1,130.34 km) |
| Montesarchio to Odorheiu Secuiesc | 643.73 mi (1,035.99 km) |
| Montesarchio to Oltenita | 644.66 mi (1,037.47 km) |
| Montesarchio to Onesti | 703.59 mi (1,132.32 km) |
| Montesarchio to Oradea | 550.02 mi (885.18 km) |
| Montesarchio to Orastie | 541.54 mi (871.52 km) |
| Montesarchio to Oravita | 449.31 mi (723.10 km) |
| Montesarchio to Orsova | 466.90 mi (751.40 km) |
| Montesarchio to Otelu Rosu | 494.92 mi (796.49 km) |
| Montesarchio to Otopeni | 626.98 mi (1,009.03 km) |
| Montesarchio to Ovidiu | 740.26 mi (1,191.33 km) |
