| Nizza Monferrato to Oerlinghausen | 497.12 mi (800.04 km) |
| Nizza Monferrato to Oestrich-Winkel | 361.41 mi (581.64 km) |
| Nizza Monferrato to Offenburg | 255.88 mi (411.79 km) |
| Nizza Monferrato to Oftersheim | 317.73 mi (511.34 km) |
| Nizza Monferrato to Ohrdruf | 432.50 mi (696.04 km) |
| Nizza Monferrato to Ohringen | 310.47 mi (499.66 km) |
| Nizza Monferrato to Olbernhau | 468.02 mi (753.20 km) |
| Nizza Monferrato to Olching | 275.38 mi (443.18 km) |
| Nizza Monferrato to Oldenburg | 578.29 mi (930.67 km) |
| Nizza Monferrato to Oldenburg in Holstein | 667.71 mi (1,074.58 km) |
| Nizza Monferrato to Olfen | 481.71 mi (775.24 km) |
| Nizza Monferrato to Olpe | 431.95 mi (695.16 km) |
| Nizza Monferrato to Olsberg | 454.35 mi (731.20 km) |
| Nizza Monferrato to Oranienburg | 594.14 mi (956.18 km) |
| Nizza Monferrato to Ortenberg | 386.99 mi (622.80 km) |
