| Gallarate to Oswego (Illinois) | 4,542.13 mi (7,309.86 km) |
| Gallarate to Oswego (New York) | 3,990.40 mi (6,421.92 km) |
| Gallarate to Otsego (Minnesota) | 4,578.96 mi (7,369.12 km) |
| Gallarate to Ottawa (Illinois) | 4,576.08 mi (7,364.49 km) |
| Gallarate to Ottawa (Kansas) | 4,955.64 mi (7,975.34 km) |
| Gallarate to Ottumwa (Iowa) | 4,731.05 mi (7,613.89 km) |
| Gallarate to Overland (Missouri) | 4,759.03 mi (7,658.92 km) |
| Gallarate to Overland Park (Kansas) | 4,919.53 mi (7,917.23 km) |
| Gallarate to Overlea (Maryland) | 4,155.45 mi (6,687.55 km) |
| Gallarate to Oviedo (Florida) | 4,831.32 mi (7,775.26 km) |
| Gallarate to Owasso (Oklahoma) | 5,090.33 mi (8,192.09 km) |
| Gallarate to Owatonna (Minnesota) | 4,618.93 mi (7,433.45 km) |
| Gallarate to Owensboro (Kentucky) | 4,670.61 mi (7,516.61 km) |
| Gallarate to Owings Mills (Maryland) | 4,165.24 mi (6,703.30 km) |
| Gallarate to Owosso (Michigan) | 4,320.30 mi (6,952.85 km) |
