| Gardelegen to Navodari | 968.05 mi (1,557.92 km) |
| Gardelegen to Negresti-Oas | 620.71 mi (998.93 km) |
| Gardelegen to Nehoiu | 836.21 mi (1,345.76 km) |
| Gardelegen to Ocna Mures | 700.74 mi (1,127.73 km) |
| Gardelegen to Odobesti | 845.73 mi (1,361.08 km) |
| Gardelegen to Odorheiu Secuiesc | 756.32 mi (1,217.17 km) |
| Gardelegen to Oltenita | 908.29 mi (1,461.75 km) |
| Gardelegen to Onesti | 813.42 mi (1,309.07 km) |
| Gardelegen to Oradea | 601.05 mi (967.30 km) |
| Gardelegen to Orastie | 703.49 mi (1,132.16 km) |
| Gardelegen to Oravita | 696.60 mi (1,121.06 km) |
| Gardelegen to Orsova | 735.33 mi (1,183.41 km) |
| Gardelegen to Otelu Rosu | 692.16 mi (1,113.93 km) |
| Gardelegen to Otopeni | 865.84 mi (1,393.44 km) |
| Gardelegen to Ovidiu | 968.45 mi (1,558.58 km) |
