| Oconomowoc to Orangevale (California) | 1,724.90 mi (2,775.95 km) |
| Oconomowoc to Orchards (Washington) | 1,677.08 mi (2,699.00 km) |
| Oconomowoc to Orcutt (California) | 1,793.92 mi (2,887.03 km) |
| Oconomowoc to Oregon (Ohio) | 277.02 mi (445.83 km) |
| Oconomowoc to Oregon (Wisconsin) | 46.76 mi (75.26 km) |
| Oconomowoc to Oregon City (Oregon) | 1,682.80 mi (2,708.21 km) |
| Oconomowoc to Orem (Utah) | 1,208.64 mi (1,945.12 km) |
| Oconomowoc to Orinda (California) | 1,793.70 mi (2,886.68 km) |
| Oconomowoc to Orland Park (Illinois) | 108.04 mi (173.87 km) |
| Oconomowoc to Orlando (Florida) | 1,085.97 mi (1,747.70 km) |
| Oconomowoc to Ormond Beach (Florida) | 1,037.78 mi (1,670.14 km) |
| Oconomowoc to Oro Valley (Arizona) | 1,425.81 mi (2,294.62 km) |
| Oconomowoc to Oroville (California) | 1,723.06 mi (2,772.99 km) |
| Oconomowoc to Oshkosh (Wisconsin) | 63.87 mi (102.79 km) |
| Oconomowoc to Oskaloosa (Iowa) | 246.18 mi (396.19 km) |
