| Melsungen to Olympia Heights (Florida) | 4,849.07 mi (7,803.83 km) |
| Melsungen to Omaha (Nebraska) | 4,646.87 mi (7,478.42 km) |
| Melsungen to On Top of the World Designated Place (Florida) | 4,755.58 mi (7,653.37 km) |
| Melsungen to Onalaska (Wisconsin) | 4,346.78 mi (6,995.47 km) |
| Melsungen to Oneida (New York) | 3,817.24 mi (6,143.26 km) |
| Melsungen to Oneonta (New York) | 3,822.17 mi (6,151.19 km) |
| Melsungen to Ontario (California) | 5,735.16 mi (9,229.85 km) |
| Melsungen to Ontario (Oregon) | 5,125.52 mi (8,248.72 km) |
| Melsungen to Opa-locka (Florida) | 4,836.56 mi (7,783.69 km) |
| Melsungen to Opelika (Alabama) | 4,697.43 mi (7,559.79 km) |
| Melsungen to Opelousas (Louisiana) | 5,068.16 mi (8,156.41 km) |
| Melsungen to Orange (California) | 5,755.44 mi (9,262.48 km) |
| Melsungen to Orange (Texas) | 5,153.43 mi (8,293.64 km) |
| Melsungen to Orange City (Florida) | 4,723.67 mi (7,602.00 km) |
| Melsungen to Orangeburg (South Carolina) | 4,476.93 mi (7,204.92 km) |
