| Gummersbach to Navodari | 1,078.31 mi (1,735.38 km) |
| Gummersbach to Negresti-Oas | 743.36 mi (1,196.33 km) |
| Gummersbach to Nehoiu | 944.63 mi (1,520.23 km) |
| Gummersbach to Ocna Mures | 806.93 mi (1,298.64 km) |
| Gummersbach to Odobesti | 962.05 mi (1,548.27 km) |
| Gummersbach to Odorheiu Secuiesc | 869.67 mi (1,399.60 km) |
| Gummersbach to Oltenita | 1,006.24 mi (1,619.39 km) |
| Gummersbach to Onesti | 933.30 mi (1,502.00 km) |
| Gummersbach to Oradea | 703.76 mi (1,132.60 km) |
| Gummersbach to Orastie | 798.90 mi (1,285.70 km) |
| Gummersbach to Oravita | 770.65 mi (1,240.24 km) |
| Gummersbach to Orsova | 811.49 mi (1,305.97 km) |
| Gummersbach to Otelu Rosu | 777.40 mi (1,251.11 km) |
| Gummersbach to Otopeni | 964.98 mi (1,552.99 km) |
| Gummersbach to Ovidiu | 1,078.03 mi (1,734.92 km) |
