| Castelginest to Orangevale (California) | 5,713.12 mi (9,194.37 km) |
| Castelginest to Orchards (Washington) | 5,372.17 mi (8,645.67 km) |
| Castelginest to Orcutt (California) | 5,894.03 mi (9,485.53 km) |
| Castelginest to Oregon (Ohio) | 4,111.37 mi (6,616.61 km) |
| Castelginest to Oregon (Wisconsin) | 4,313.32 mi (6,941.62 km) |
| Castelginest to Oregon City (Oregon) | 5,392.96 mi (8,679.12 km) |
| Castelginest to Orem (Utah) | 5,299.08 mi (8,528.04 km) |
| Castelginest to Orinda (California) | 5,789.01 mi (9,316.51 km) |
| Castelginest to Orland Park (Illinois) | 4,302.18 mi (6,923.69 km) |
| Castelginest to Orlando (Florida) | 4,548.74 mi (7,320.48 km) |
| Castelginest to Ormond Beach (Florida) | 4,502.58 mi (7,246.20 km) |
| Castelginest to Oro Valley (Arizona) | 5,671.61 mi (9,127.57 km) |
| Castelginest to Oroville (California) | 5,680.05 mi (9,141.16 km) |
| Castelginest to Oshkosh (Wisconsin) | 4,235.90 mi (6,817.03 km) |
| Castelginest to Oskaloosa (Iowa) | 4,514.39 mi (7,265.21 km) |
