| Casale Monferrato to Oakley (California) | 5,910.15 mi (9,511.46 km) |
| Casale Monferrato to Oakton (Virginia) | 4,211.27 mi (6,777.39 km) |
| Casale Monferrato to Oakville (Missouri) | 4,775.80 mi (7,685.91 km) |
| Casale Monferrato to Oatfield (Oregon) | 5,503.82 mi (8,857.53 km) |
| Casale Monferrato to Ocala (Florida) | 4,849.30 mi (7,804.19 km) |
| Casale Monferrato to Ocean Acres (New Jersey) | 4,045.65 mi (6,510.85 km) |
| Casale Monferrato to Ocean City (New Jersey) | 4,078.53 mi (6,563.76 km) |
| Casale Monferrato to Ocean Pines (Maryland) | 4,137.95 mi (6,659.38 km) |
| Casale Monferrato to Ocean Pointe (Hawaii) | 7,767.40 mi (12,500.43 km) |
| Casale Monferrato to Ocean Springs (Mississippi) | 5,086.58 mi (8,186.06 km) |
| Casale Monferrato to Oceanside (California) | 6,046.43 mi (9,730.79 km) |
| Casale Monferrato to Oceanside (New York) | 3,982.79 mi (6,409.68 km) |
| Casale Monferrato to Ocoee (Florida) | 4,848.62 mi (7,803.10 km) |
| Casale Monferrato to Oconomowoc (Wisconsin) | 4,494.12 mi (7,232.59 km) |
| Casale Monferrato to Odenton (Maryland) | 4,177.70 mi (6,723.35 km) |
