| Osuna to Nasaud | 1,647.92 mi (2,652.06 km) |
| Osuna to Navodari | 1,816.46 mi (2,923.32 km) |
| Osuna to Negresti-Oas | 1,614.45 mi (2,598.21 km) |
| Osuna to Nehoiu | 1,711.31 mi (2,754.09 km) |
| Osuna to Ocna Mures | 1,608.45 mi (2,588.55 km) |
| Osuna to Odobesti | 1,751.81 mi (2,819.27 km) |
| Osuna to Odorheiu Secuiesc | 1,674.65 mi (2,695.09 km) |
| Osuna to Oltenita | 1,717.61 mi (2,764.22 km) |
| Osuna to Onesti | 1,742.92 mi (2,804.95 km) |
| Osuna to Oradea | 1,531.48 mi (2,464.68 km) |
| Osuna to Orastie | 1,569.54 mi (2,525.92 km) |
| Osuna to Oravita | 1,486.06 mi (2,391.58 km) |
| Osuna to Orsova | 1,516.01 mi (2,439.79 km) |
| Osuna to Otelu Rosu | 1,524.71 mi (2,453.79 km) |
| Osuna to Otopeni | 1,692.93 mi (2,724.50 km) |
