| Gallarate to Oakley (California) | 5,890.63 mi (9,480.05 km) |
| Gallarate to Oakton (Virginia) | 4,208.78 mi (6,773.38 km) |
| Gallarate to Oakville (Missouri) | 4,768.64 mi (7,674.39 km) |
| Gallarate to Oatfield (Oregon) | 5,481.56 mi (8,821.72 km) |
| Gallarate to Ocala (Florida) | 4,850.63 mi (7,806.33 km) |
| Gallarate to Ocean Acres (New Jersey) | 4,043.72 mi (6,507.73 km) |
| Gallarate to Ocean City (New Jersey) | 4,076.80 mi (6,560.97 km) |
| Gallarate to Ocean Pines (Maryland) | 4,136.59 mi (6,657.20 km) |
| Gallarate to Ocean Pointe (Hawaii) | 7,735.49 mi (12,449.07 km) |
| Gallarate to Ocean Springs (Mississippi) | 5,084.38 mi (8,182.51 km) |
| Gallarate to Oceanside (California) | 6,030.43 mi (9,705.05 km) |
| Gallarate to Oceanside (New York) | 3,980.49 mi (6,405.97 km) |
| Gallarate to Ocoee (Florida) | 4,850.55 mi (7,806.20 km) |
| Gallarate to Oconomowoc (Wisconsin) | 4,485.02 mi (7,217.94 km) |
| Gallarate to Odenton (Maryland) | 4,175.32 mi (6,719.53 km) |
