| Hannover to Navodari | 1,025.84 mi (1,650.93 km) |
| Hannover to Negresti-Oas | 680.67 mi (1,095.43 km) |
| Hannover to Nehoiu | 893.12 mi (1,437.34 km) |
| Hannover to Ocna Mures | 756.48 mi (1,217.43 km) |
| Hannover to Odobesti | 904.83 mi (1,456.19 km) |
| Hannover to Odorheiu Secuiesc | 814.31 mi (1,310.50 km) |
| Hannover to Oltenita | 962.47 mi (1,548.95 km) |
| Hannover to Onesti | 873.37 mi (1,405.55 km) |
| Hannover to Oradea | 655.21 mi (1,054.45 km) |
| Hannover to Orastie | 756.09 mi (1,216.81 km) |
| Hannover to Oravita | 742.62 mi (1,195.14 km) |
| Hannover to Orsova | 782.26 mi (1,258.92 km) |
| Hannover to Otelu Rosu | 741.63 mi (1,193.54 km) |
| Hannover to Otopeni | 920.23 mi (1,480.96 km) |
| Hannover to Ovidiu | 1,026.06 mi (1,651.28 km) |
