| Oosterwolde to Navodari | 1,174.60 mi (1,890.34 km) |
| Oosterwolde to Negresti-Oas | 830.22 mi (1,336.11 km) |
| Oosterwolde to Nehoiu | 1,041.61 mi (1,676.31 km) |
| Oosterwolde to Ocna Mures | 904.60 mi (1,455.81 km) |
| Oosterwolde to Odobesti | 1,054.09 mi (1,696.39 km) |
| Oosterwolde to Odorheiu Secuiesc | 963.26 mi (1,550.22 km) |
| Oosterwolde to Oltenita | 1,109.59 mi (1,785.70 km) |
| Oosterwolde to Onesti | 1,022.85 mi (1,646.12 km) |
| Oosterwolde to Oradea | 802.75 mi (1,291.90 km) |
| Oosterwolde to Orastie | 902.62 mi (1,452.62 km) |
| Oosterwolde to Oravita | 884.75 mi (1,423.87 km) |
| Oosterwolde to Orsova | 924.92 mi (1,488.52 km) |
| Oosterwolde to Otelu Rosu | 886.25 mi (1,426.28 km) |
| Oosterwolde to Otopeni | 1,067.50 mi (1,717.97 km) |
| Oosterwolde to Ovidiu | 1,174.75 mi (1,890.57 km) |
