| Oberhausen to Olympia Heights (Florida) | 4,730.89 mi (7,613.64 km) |
| Oberhausen to Omaha (Nebraska) | 4,539.69 mi (7,305.93 km) |
| Oberhausen to On Top of the World Designated Place (Florida) | 4,638.14 mi (7,464.37 km) |
| Oberhausen to Onalaska (Wisconsin) | 4,238.81 mi (6,821.70 km) |
| Oberhausen to Oneida (New York) | 3,702.62 mi (5,958.79 km) |
| Oberhausen to Oneonta (New York) | 3,707.08 mi (5,965.97 km) |
| Oberhausen to Ontario (California) | 5,638.25 mi (9,073.89 km) |
| Oberhausen to Ontario (Oregon) | 5,034.77 mi (8,102.68 km) |
| Oberhausen to Opa-locka (Florida) | 4,718.39 mi (7,593.51 km) |
| Oberhausen to Opelika (Alabama) | 4,581.62 mi (7,373.41 km) |
| Oberhausen to Opelousas (Louisiana) | 4,953.83 mi (7,972.41 km) |
| Oberhausen to Orange (California) | 5,658.57 mi (9,106.59 km) |
| Oberhausen to Orange (Texas) | 5,039.59 mi (8,110.44 km) |
| Oberhausen to Orange City (Florida) | 4,606.02 mi (7,412.67 km) |
| Oberhausen to Orangeburg (South Carolina) | 4,360.19 mi (7,017.05 km) |
