| Oleiros to Nasaud | 1,601.18 mi (2,576.86 km) |
| Oleiros to Navodari | 1,826.42 mi (2,939.35 km) |
| Oleiros to Negresti-Oas | 1,554.49 mi (2,501.71 km) |
| Oleiros to Nehoiu | 1,703.22 mi (2,741.07 km) |
| Oleiros to Ocna Mures | 1,578.82 mi (2,540.86 km) |
| Oleiros to Odobesti | 1,736.01 mi (2,793.84 km) |
| Oleiros to Odorheiu Secuiesc | 1,647.77 mi (2,651.83 km) |
| Oleiros to Oltenita | 1,733.29 mi (2,789.46 km) |
| Oleiros to Onesti | 1,717.88 mi (2,764.66 km) |
| Oleiros to Oradea | 1,484.94 mi (2,389.79 km) |
| Oleiros to Orastie | 1,550.25 mi (2,494.88 km) |
| Oleiros to Oravita | 1,482.57 mi (2,385.97 km) |
| Oleiros to Orsova | 1,519.68 mi (2,445.69 km) |
| Oleiros to Otelu Rosu | 1,511.57 mi (2,432.63 km) |
| Oleiros to Otopeni | 1,700.14 mi (2,736.10 km) |
