| Wierden to Navodari | 1,146.73 mi (1,845.49 km) |
| Wierden to Negresti-Oas | 804.83 mi (1,295.25 km) |
| Wierden to Nehoiu | 1,013.36 mi (1,630.84 km) |
| Wierden to Ocna Mures | 875.91 mi (1,409.65 km) |
| Wierden to Odobesti | 1,027.45 mi (1,653.52 km) |
| Wierden to Odorheiu Secuiesc | 935.99 mi (1,506.32 km) |
| Wierden to Oltenita | 1,079.34 mi (1,737.03 km) |
| Wierden to Onesti | 996.97 mi (1,604.47 km) |
| Wierden to Oradea | 773.44 mi (1,244.73 km) |
| Wierden to Orastie | 871.98 mi (1,403.32 km) |
| Wierden to Oravita | 850.71 mi (1,369.09 km) |
| Wierden to Orsova | 891.16 mi (1,434.18 km) |
| Wierden to Otelu Rosu | 853.92 mi (1,374.26 km) |
| Wierden to Otopeni | 1,037.48 mi (1,669.66 km) |
| Wierden to Ovidiu | 1,146.74 mi (1,845.50 km) |
