| Ascoli Piceno to Navodari | 757.95 mi (1,219.81 km) |
| Ascoli Piceno to Negresti-Oas | 589.62 mi (948.90 km) |
| Ascoli Piceno to Nehoiu | 653.68 mi (1,051.99 km) |
| Ascoli Piceno to Ocna Mures | 560.89 mi (902.67 km) |
| Ascoli Piceno to Odobesti | 695.46 mi (1,119.24 km) |
| Ascoli Piceno to Odorheiu Secuiesc | 623.60 mi (1,003.58 km) |
| Ascoli Piceno to Oltenita | 659.40 mi (1,061.20 km) |
| Ascoli Piceno to Onesti | 689.59 mi (1,109.78 km) |
| Ascoli Piceno to Oradea | 500.82 mi (805.99 km) |
| Ascoli Piceno to Orastie | 517.94 mi (833.54 km) |
| Ascoli Piceno to Oravita | 430.29 mi (692.48 km) |
| Ascoli Piceno to Orsova | 458.00 mi (737.09 km) |
| Ascoli Piceno to Otelu Rosu | 471.68 mi (759.09 km) |
| Ascoli Piceno to Otopeni | 634.04 mi (1,020.38 km) |
| Ascoli Piceno to Ovidiu | 755.18 mi (1,215.34 km) |
