| Carthage to Odessa (Texas) | 583.71 mi (939.40 km) |
| Carthage to Ogden (Utah) | 984.05 mi (1,583.68 km) |
| Carthage to Oildale (California) | 1,377.26 mi (2,216.49 km) |
| Carthage to Ojus (Florida) | 1,134.80 mi (1,826.28 km) |
| Carthage to Okemos (Michigan) | 649.64 mi (1,045.49 km) |
| Carthage to Oklahoma City (Oklahoma) | 212.31 mi (341.68 km) |
| Carthage to Okmulgee (Oklahoma) | 141.61 mi (227.89 km) |
| Carthage to Olathe (Kansas) | 122.76 mi (197.57 km) |
| Carthage to Old Jamestown (Missouri) | 248.88 mi (400.53 km) |
| Carthage to Oldsmar (Florida) | 923.44 mi (1,486.13 km) |
| Carthage to Olean (New York) | 910.06 mi (1,464.59 km) |
| Carthage to Olive Branch (Mississippi) | 292.15 mi (470.17 km) |
| Carthage to Olivehurst (California) | 1,480.90 mi (2,383.28 km) |
| Carthage to Olney (Maryland) | 945.96 mi (1,522.38 km) |
| Carthage to Olympia (Washington) | 1,604.52 mi (2,582.23 km) |
