| Marietta to Odessa (Texas) | 1,041.11 mi (1,675.51 km) |
| Marietta to Ogden (Utah) | 1,575.63 mi (2,535.74 km) |
| Marietta to Oildale (California) | 1,952.03 mi (3,141.49 km) |
| Marietta to Ojus (Florida) | 611.45 mi (984.03 km) |
| Marietta to Okemos (Michigan) | 604.77 mi (973.29 km) |
| Marietta to Oklahoma City (Oklahoma) | 743.58 mi (1,196.67 km) |
| Marietta to Okmulgee (Oklahoma) | 660.22 mi (1,062.52 km) |
| Marietta to Olathe (Kansas) | 664.63 mi (1,069.62 km) |
| Marietta to Old Jamestown (Missouri) | 464.52 mi (747.57 km) |
| Marietta to Oldsmar (Florida) | 422.62 mi (680.14 km) |
| Marietta to Olean (New York) | 652.29 mi (1,049.76 km) |
| Marietta to Olive Branch (Mississippi) | 310.09 mi (499.04 km) |
| Marietta to Olivehurst (California) | 2,071.08 mi (3,333.09 km) |
| Marietta to Olney (Maryland) | 547.99 mi (881.91 km) |
| Marietta to Olympia (Washington) | 2,181.03 mi (3,510.03 km) |
