| Ospitaletto to Oerlinghausen | 447.57 mi (720.29 km) |
| Ospitaletto to Oestrich-Winkel | 321.80 mi (517.89 km) |
| Ospitaletto to Offenburg | 224.99 mi (362.08 km) |
| Ospitaletto to Oftersheim | 272.61 mi (438.73 km) |
| Ospitaletto to Ohrdruf | 365.58 mi (588.34 km) |
| Ospitaletto to Ohringen | 253.25 mi (407.56 km) |
| Ospitaletto to Olbernhau | 383.76 mi (617.59 km) |
| Ospitaletto to Olching | 191.93 mi (308.88 km) |
| Ospitaletto to Oldenburg | 530.91 mi (854.42 km) |
| Ospitaletto to Oldenburg in Holstein | 605.26 mi (974.08 km) |
| Ospitaletto to Olfen | 442.99 mi (712.93 km) |
| Ospitaletto to Olpe | 391.10 mi (629.41 km) |
| Ospitaletto to Olsberg | 406.92 mi (654.88 km) |
| Ospitaletto to Oranienburg | 517.41 mi (832.69 km) |
| Ospitaletto to Ortenberg | 335.00 mi (539.13 km) |
