| Olgiate Comasco to Orangevale (California) | 5,834.83 mi (9,390.25 km) |
| Olgiate Comasco to Orchards (Washington) | 5,461.37 mi (8,789.22 km) |
| Olgiate Comasco to Orcutt (California) | 6,033.62 mi (9,710.18 km) |
| Olgiate Comasco to Oregon (Ohio) | 4,350.52 mi (7,001.48 km) |
| Olgiate Comasco to Oregon (Wisconsin) | 4,529.06 mi (7,288.81 km) |
| Olgiate Comasco to Oregon City (Oregon) | 5,483.28 mi (8,824.48 km) |
| Olgiate Comasco to Orem (Utah) | 5,452.50 mi (8,774.95 km) |
| Olgiate Comasco to Orinda (California) | 5,909.68 mi (9,510.72 km) |
| Olgiate Comasco to Orland Park (Illinois) | 4,529.01 mi (7,288.73 km) |
| Olgiate Comasco to Orlando (Florida) | 4,851.42 mi (7,807.60 km) |
| Olgiate Comasco to Ormond Beach (Florida) | 4,802.84 mi (7,729.43 km) |
| Olgiate Comasco to Oro Valley (Arizona) | 5,859.97 mi (9,430.71 km) |
| Olgiate Comasco to Oroville (California) | 5,797.22 mi (9,329.73 km) |
| Olgiate Comasco to Oshkosh (Wisconsin) | 4,448.36 mi (7,158.95 km) |
| Olgiate Comasco to Oskaloosa (Iowa) | 4,728.51 mi (7,609.80 km) |
