| Obernburg am Main to Olympia Heights (Florida) | 4,857.74 mi (7,817.77 km) |
| Obernburg am Main to Omaha (Nebraska) | 4,688.24 mi (7,545.00 km) |
| Obernburg am Main to On Top of the World Designated Place (Florida) | 4,770.25 mi (7,676.97 km) |
| Obernburg am Main to Onalaska (Wisconsin) | 4,386.88 mi (7,060.00 km) |
| Obernburg am Main to Oneida (New York) | 3,843.20 mi (6,185.04 km) |
| Obernburg am Main to Oneonta (New York) | 3,846.73 mi (6,190.71 km) |
| Obernburg am Main to Ontario (California) | 5,789.79 mi (9,317.77 km) |
| Obernburg am Main to Ontario (Oregon) | 5,186.16 mi (8,346.31 km) |
| Obernburg am Main to Opa-locka (Florida) | 4,845.33 mi (7,797.80 km) |
| Obernburg am Main to Opelika (Alabama) | 4,719.40 mi (7,595.15 km) |
| Obernburg am Main to Opelousas (Louisiana) | 5,094.72 mi (8,199.16 km) |
| Obernburg am Main to Orange (California) | 5,810.11 mi (9,350.47 km) |
| Obernburg am Main to Orange (Texas) | 5,181.33 mi (8,338.54 km) |
| Obernburg am Main to Orange City (Florida) | 4,737.06 mi (7,623.55 km) |
| Obernburg am Main to Orangeburg (South Carolina) | 4,495.27 mi (7,234.43 km) |
