| Olsberg to Novi di Modena | 459.76 mi (739.92 km) |
| Olsberg to Novi Ligure | 455.59 mi (733.21 km) |
| Olsberg to Nuoro | 763.41 mi (1,228.59 km) |
| Olsberg to Occhiobello | 466.45 mi (750.68 km) |
| Olsberg to Oderzo | 426.08 mi (685.70 km) |
| Olsberg to Oggiono | 386.65 mi (622.25 km) |
| Olsberg to Olbia | 722.49 mi (1,162.74 km) |
| Olsberg to Oleggio | 397.35 mi (639.47 km) |
| Olsberg to Olgiate Comasco | 385.25 mi (620.01 km) |
| Olsberg to Olgiate Olona | 395.41 mi (636.35 km) |
| Olsberg to Omegna | 378.09 mi (608.47 km) |
| Olsberg to Opera | 413.63 mi (665.67 km) |
| Olsberg to Oppeano | 435.95 mi (701.59 km) |
| Olsberg to Orbassano | 440.39 mi (708.74 km) |
| Olsberg to Orbetello | 628.88 mi (1,012.09 km) |
