| Oregon to Nasaud | 4,874.36 mi (7,844.53 km) |
| Oregon to Navodari | 5,161.96 mi (8,307.38 km) |
| Oregon to Negresti-Oas | 4,813.24 mi (7,746.16 km) |
| Oregon to Nehoiu | 5,030.79 mi (8,096.27 km) |
| Oregon to Ocna Mures | 4,895.35 mi (7,878.30 km) |
| Oregon to Odobesti | 5,038.44 mi (8,108.58 km) |
| Oregon to Odorheiu Secuiesc | 4,950.42 mi (7,966.93 km) |
| Oregon to Oltenita | 5,102.21 mi (8,211.22 km) |
| Oregon to Onesti | 5,004.87 mi (8,054.57 km) |
| Oregon to Oradea | 4,794.84 mi (7,716.55 km) |
| Oregon to Orastie | 4,895.84 mi (7,879.09 km) |
| Oregon to Oravita | 4,876.20 mi (7,847.49 km) |
| Oregon to Orsova | 4,916.81 mi (7,912.85 km) |
| Oregon to Otelu Rosu | 4,879.64 mi (7,853.02 km) |
| Oregon to Otopeni | 5,059.90 mi (8,143.13 km) |
