| Zimnicea to Olympia Heights (Florida) | 5,729.66 mi (9,221.00 km) |
| Zimnicea to Omaha (Nebraska) | 5,535.26 mi (8,908.14 km) |
| Zimnicea to On Top of the World Designated Place (Florida) | 5,646.18 mi (9,086.65 km) |
| Zimnicea to Onalaska (Wisconsin) | 5,237.50 mi (8,428.93 km) |
| Zimnicea to Oneida (New York) | 4,716.59 mi (7,590.62 km) |
| Zimnicea to Oneonta (New York) | 4,721.14 mi (7,597.94 km) |
| Zimnicea to Ontario (California) | 6,584.24 mi (10,596.32 km) |
| Zimnicea to Ontario (Oregon) | 5,949.56 mi (9,574.90 km) |
| Zimnicea to Opa-locka (Florida) | 5,717.36 mi (9,201.21 km) |
| Zimnicea to Opelika (Alabama) | 5,595.24 mi (9,004.68 km) |
| Zimnicea to Opelousas (Louisiana) | 5,967.65 mi (9,604.00 km) |
| Zimnicea to Orange (California) | 6,604.27 mi (10,628.55 km) |
| Zimnicea to Orange (Texas) | 6,052.96 mi (9,741.29 km) |
| Zimnicea to Orange City (Florida) | 5,612.46 mi (9,032.37 km) |
| Zimnicea to Orangeburg (South Carolina) | 5,371.84 mi (8,645.14 km) |
