| Ospitaletto to Navodari | 908.73 mi (1,462.46 km) |
| Ospitaletto to Negresti-Oas | 651.47 mi (1,048.44 km) |
| Ospitaletto to Nehoiu | 785.49 mi (1,264.13 km) |
| Ospitaletto to Ocna Mures | 663.69 mi (1,068.11 km) |
| Ospitaletto to Odobesti | 819.19 mi (1,318.35 km) |
| Ospitaletto to Odorheiu Secuiesc | 732.51 mi (1,178.86 km) |
| Ospitaletto to Oltenita | 816.58 mi (1,314.16 km) |
| Ospitaletto to Onesti | 802.67 mi (1,291.77 km) |
| Ospitaletto to Oradea | 574.46 mi (924.50 km) |
| Ospitaletto to Orastie | 633.02 mi (1,018.75 km) |
| Ospitaletto to Oravita | 564.99 mi (909.26 km) |
| Ospitaletto to Orsova | 602.70 mi (969.95 km) |
| Ospitaletto to Otelu Rosu | 593.71 mi (955.48 km) |
| Ospitaletto to Otopeni | 782.60 mi (1,259.47 km) |
| Ospitaletto to Ovidiu | 906.89 mi (1,459.49 km) |
