| Oberhausen to Novi di Modena | 492.37 mi (792.39 km) |
| Oberhausen to Novi Ligure | 473.77 mi (762.47 km) |
| Oberhausen to Nuoro | 781.36 mi (1,257.48 km) |
| Oberhausen to Occhiobello | 503.16 mi (809.76 km) |
| Oberhausen to Oderzo | 470.71 mi (757.53 km) |
| Oberhausen to Oggiono | 410.60 mi (660.80 km) |
| Oberhausen to Olbia | 741.61 mi (1,193.51 km) |
| Oberhausen to Oleggio | 415.29 mi (668.34 km) |
| Oberhausen to Olgiate Comasco | 406.15 mi (653.63 km) |
| Oberhausen to Olgiate Olona | 415.40 mi (668.52 km) |
| Oberhausen to Omegna | 394.46 mi (634.82 km) |
| Oberhausen to Opera | 435.81 mi (701.36 km) |
| Oberhausen to Oppeano | 471.45 mi (758.72 km) |
| Oberhausen to Orbassano | 449.42 mi (723.26 km) |
| Oberhausen to Orbetello | 658.13 mi (1,059.16 km) |
