| Olgiate Comasco to Oakley (California) | 5,889.17 mi (9,477.70 km) |
| Olgiate Comasco to Oakton (Virginia) | 4,212.54 mi (6,779.43 km) |
| Olgiate Comasco to Oakville (Missouri) | 4,771.06 mi (7,678.27 km) |
| Olgiate Comasco to Oatfield (Oregon) | 5,479.18 mi (8,817.89 km) |
| Olgiate Comasco to Ocala (Florida) | 4,855.41 mi (7,814.03 km) |
| Olgiate Comasco to Ocean Acres (New Jersey) | 4,047.63 mi (6,514.04 km) |
| Olgiate Comasco to Ocean City (New Jersey) | 4,080.77 mi (6,567.36 km) |
| Olgiate Comasco to Ocean Pines (Maryland) | 4,140.66 mi (6,663.75 km) |
| Olgiate Comasco to Ocean Pointe (Hawaii) | 7,729.45 mi (12,439.34 km) |
| Olgiate Comasco to Ocean Springs (Mississippi) | 5,088.19 mi (8,188.66 km) |
| Olgiate Comasco to Oceanside (California) | 6,030.12 mi (9,704.54 km) |
| Olgiate Comasco to Oceanside (New York) | 3,984.30 mi (6,412.11 km) |
| Olgiate Comasco to Ocoee (Florida) | 4,855.49 mi (7,814.16 km) |
| Olgiate Comasco to Oconomowoc (Wisconsin) | 4,486.87 mi (7,220.91 km) |
| Olgiate Comasco to Odenton (Maryland) | 4,179.11 mi (6,725.63 km) |
