| Castelnuovo Rangone to Orangevale (California) | 5,960.13 mi (9,591.90 km) |
| Castelnuovo Rangone to Orchards (Washington) | 5,584.10 mi (8,986.75 km) |
| Castelnuovo Rangone to Orcutt (California) | 6,160.02 mi (9,913.60 km) |
| Castelnuovo Rangone to Oregon (Ohio) | 4,477.53 mi (7,205.89 km) |
| Castelnuovo Rangone to Oregon (Wisconsin) | 4,657.00 mi (7,494.72 km) |
| Castelnuovo Rangone to Oregon City (Oregon) | 5,606.11 mi (9,022.16 km) |
| Castelnuovo Rangone to Orem (Utah) | 5,579.73 mi (8,979.71 km) |
| Castelnuovo Rangone to Orinda (California) | 6,034.88 mi (9,712.21 km) |
| Castelnuovo Rangone to Orland Park (Illinois) | 4,656.61 mi (7,494.09 km) |
| Castelnuovo Rangone to Orlando (Florida) | 4,971.95 mi (8,001.57 km) |
| Castelnuovo Rangone to Ormond Beach (Florida) | 4,923.75 mi (7,924.01 km) |
| Castelnuovo Rangone to Oro Valley (Arizona) | 5,988.12 mi (9,636.94 km) |
| Castelnuovo Rangone to Oroville (California) | 5,922.20 mi (9,530.86 km) |
| Castelnuovo Rangone to Oshkosh (Wisconsin) | 4,576.37 mi (7,364.96 km) |
| Castelnuovo Rangone to Oskaloosa (Iowa) | 4,856.51 mi (7,815.80 km) |
