| Gennep to Navodari | 1,157.88 mi (1,863.42 km) |
| Gennep to Negresti-Oas | 820.16 mi (1,319.91 km) |
| Gennep to Nehoiu | 1,024.22 mi (1,648.32 km) |
| Gennep to Ocna Mures | 886.51 mi (1,426.69 km) |
| Gennep to Odobesti | 1,040.52 mi (1,674.56 km) |
| Gennep to Odorheiu Secuiesc | 948.40 mi (1,526.30 km) |
| Gennep to Oltenita | 1,087.16 mi (1,749.61 km) |
| Gennep to Onesti | 1,011.12 mi (1,627.24 km) |
| Gennep to Oradea | 783.47 mi (1,260.87 km) |
| Gennep to Orastie | 879.70 mi (1,415.74 km) |
| Gennep to Oravita | 853.01 mi (1,372.79 km) |
| Gennep to Orsova | 893.80 mi (1,438.44 km) |
| Gennep to Otelu Rosu | 859.06 mi (1,382.52 km) |
| Gennep to Otopeni | 1,045.71 mi (1,682.91 km) |
| Gennep to Ovidiu | 1,157.68 mi (1,863.11 km) |
