| Hamminkeln to Navodari | 1,133.09 mi (1,823.53 km) |
| Hamminkeln to Negresti-Oas | 794.55 mi (1,278.70 km) |
| Hamminkeln to Nehoiu | 999.46 mi (1,608.48 km) |
| Hamminkeln to Ocna Mures | 861.77 mi (1,386.89 km) |
| Hamminkeln to Odobesti | 1,015.35 mi (1,634.04 km) |
| Hamminkeln to Odorheiu Secuiesc | 923.32 mi (1,485.94 km) |
| Hamminkeln to Oltenita | 1,063.07 mi (1,710.85 km) |
| Hamminkeln to Onesti | 985.75 mi (1,586.41 km) |
| Hamminkeln to Oradea | 758.82 mi (1,221.20 km) |
| Hamminkeln to Orastie | 855.58 mi (1,376.93 km) |
| Hamminkeln to Oravita | 830.25 mi (1,336.15 km) |
| Hamminkeln to Orsova | 870.96 mi (1,401.67 km) |
| Hamminkeln to Otelu Rosu | 835.56 mi (1,344.70 km) |
| Hamminkeln to Otopeni | 1,021.52 mi (1,643.98 km) |
| Hamminkeln to Ovidiu | 1,132.94 mi (1,823.28 km) |
