| Casale Monferrato to Orangevale (California) | 5,855.85 mi (9,424.09 km) |
| Casale Monferrato to Orchards (Washington) | 5,486.09 mi (8,829.01 km) |
| Casale Monferrato to Orcutt (California) | 6,052.50 mi (9,740.56 km) |
| Casale Monferrato to Oregon (Ohio) | 4,354.34 mi (7,007.63 km) |
| Casale Monferrato to Oregon (Wisconsin) | 4,536.59 mi (7,300.94 km) |
| Casale Monferrato to Oregon City (Oregon) | 5,507.88 mi (8,864.08 km) |
| Casale Monferrato to Orem (Utah) | 5,469.29 mi (8,801.97 km) |
| Casale Monferrato to Orinda (California) | 5,930.88 mi (9,544.82 km) |
| Casale Monferrato to Orland Park (Illinois) | 4,534.85 mi (7,298.14 km) |
| Casale Monferrato to Orlando (Florida) | 4,844.36 mi (7,796.25 km) |
| Casale Monferrato to Ormond Beach (Florida) | 4,796.24 mi (7,718.80 km) |
| Casale Monferrato to Oro Valley (Arizona) | 5,872.18 mi (9,450.37 km) |
| Casale Monferrato to Oroville (California) | 5,818.79 mi (9,364.43 km) |
| Casale Monferrato to Oshkosh (Wisconsin) | 4,456.34 mi (7,171.79 km) |
| Casale Monferrato to Oskaloosa (Iowa) | 4,736.39 mi (7,622.49 km) |
