| Gallarate to Orangevale (California) | 5,836.30 mi (9,392.62 km) |
| Gallarate to Orchards (Washington) | 5,463.77 mi (8,793.09 km) |
| Gallarate to Orcutt (California) | 6,034.57 mi (9,711.70 km) |
| Gallarate to Oregon (Ohio) | 4,347.89 mi (6,997.25 km) |
| Gallarate to Oregon (Wisconsin) | 4,527.27 mi (7,285.94 km) |
| Gallarate to Oregon City (Oregon) | 5,485.65 mi (8,828.30 km) |
| Gallarate to Orem (Utah) | 5,452.92 mi (8,775.63 km) |
| Gallarate to Orinda (California) | 5,911.20 mi (9,513.16 km) |
| Gallarate to Orland Park (Illinois) | 4,526.84 mi (7,285.24 km) |
| Gallarate to Orlando (Florida) | 4,846.43 mi (7,799.58 km) |
| Gallarate to Ormond Beach (Florida) | 4,797.95 mi (7,721.55 km) |
| Gallarate to Oro Valley (Arizona) | 5,859.30 mi (9,429.64 km) |
| Gallarate to Oroville (California) | 5,798.83 mi (9,332.31 km) |
| Gallarate to Oshkosh (Wisconsin) | 4,446.68 mi (7,156.24 km) |
| Gallarate to Oskaloosa (Iowa) | 4,726.81 mi (7,607.07 km) |
