| Groesbeek to Navodari | 1,160.95 mi (1,868.37 km) |
| Groesbeek to Negresti-Oas | 822.76 mi (1,324.11 km) |
| Groesbeek to Nehoiu | 1,027.30 mi (1,653.29 km) |
| Groesbeek to Ocna Mures | 889.60 mi (1,431.68 km) |
| Groesbeek to Odobesti | 1,043.39 mi (1,679.18 km) |
| Groesbeek to Odorheiu Secuiesc | 951.32 mi (1,531.00 km) |
| Groesbeek to Oltenita | 1,090.54 mi (1,755.06 km) |
| Groesbeek to Onesti | 1,013.88 mi (1,631.68 km) |
| Groesbeek to Oradea | 786.60 mi (1,265.91 km) |
| Groesbeek to Orastie | 883.07 mi (1,421.16 km) |
| Groesbeek to Oravita | 856.86 mi (1,378.99 km) |
| Groesbeek to Orsova | 897.63 mi (1,444.60 km) |
| Groesbeek to Otelu Rosu | 862.67 mi (1,388.33 km) |
| Groesbeek to Otopeni | 1,049.06 mi (1,688.29 km) |
| Groesbeek to Ovidiu | 1,160.78 mi (1,868.09 km) |
