| Casale Monferrato to Odessa (Texas) | 5,575.94 mi (8,973.61 km) |
| Casale Monferrato to Ogden (Utah) | 5,427.66 mi (8,734.98 km) |
| Casale Monferrato to Oildale (California) | 5,976.66 mi (9,618.50 km) |
| Casale Monferrato to Ojus (Florida) | 4,905.90 mi (7,895.28 km) |
| Casale Monferrato to Okemos (Michigan) | 4,349.58 mi (6,999.97 km) |
| Casale Monferrato to Oklahoma City (Oklahoma) | 5,205.18 mi (8,376.93 km) |
| Casale Monferrato to Okmulgee (Oklahoma) | 5,138.30 mi (8,269.30 km) |
| Casale Monferrato to Olathe (Kansas) | 4,933.98 mi (7,940.47 km) |
| Casale Monferrato to Old Jamestown (Missouri) | 4,756.40 mi (7,654.68 km) |
| Casale Monferrato to Oldsmar (Florida) | 4,924.57 mi (7,925.34 km) |
| Casale Monferrato to Olean (New York) | 4,130.00 mi (6,646.60 km) |
| Casale Monferrato to Olive Branch (Mississippi) | 4,917.95 mi (7,914.68 km) |
| Casale Monferrato to Olivehurst (California) | 5,842.98 mi (9,403.37 km) |
| Casale Monferrato to Olney (Maryland) | 4,190.77 mi (6,744.39 km) |
| Casale Monferrato to Olympia (Washington) | 5,416.92 mi (8,717.69 km) |
