| Marietta to Orangevale (California) | 2,054.02 mi (3,305.63 km) |
| Marietta to Orchards (Washington) | 2,148.30 mi (3,457.36 km) |
| Marietta to Orcutt (California) | 2,035.22 mi (3,275.37 km) |
| Marietta to Oregon (Ohio) | 535.38 mi (861.62 km) |
| Marietta to Oregon (Wisconsin) | 672.81 mi (1,082.78 km) |
| Marietta to Oregon City (Oregon) | 2,147.78 mi (3,456.52 km) |
| Marietta to Orem (Utah) | 1,552.00 mi (2,497.71 km) |
| Marietta to Orinda (California) | 2,109.10 mi (3,394.26 km) |
| Marietta to Orland Park (Illinois) | 558.94 mi (899.52 km) |
| Marietta to Orlando (Florida) | 423.04 mi (680.82 km) |
| Marietta to Ormond Beach (Florida) | 379.95 mi (611.47 km) |
| Marietta to Oro Valley (Arizona) | 1,527.98 mi (2,459.05 km) |
| Marietta to Oroville (California) | 2,070.70 mi (3,332.47 km) |
| Marietta to Oshkosh (Wisconsin) | 728.20 mi (1,171.93 km) |
| Marietta to Oskaloosa (Iowa) | 672.80 mi (1,082.76 km) |
