| Alzenau in Unterfranken to Olympia Heights (Florida) | 4,850.02 mi (7,805.36 km) |
| Alzenau in Unterfranken to Omaha (Nebraska) | 4,675.91 mi (7,525.16 km) |
| Alzenau in Unterfranken to On Top of the World Designated Place (Florida) | 4,761.62 mi (7,663.08 km) |
| Alzenau in Unterfranken to Onalaska (Wisconsin) | 4,374.70 mi (7,040.40 km) |
| Alzenau in Unterfranken to Oneida (New York) | 3,832.90 mi (6,168.45 km) |
| Alzenau in Unterfranken to Oneonta (New York) | 3,836.62 mi (6,174.44 km) |
| Alzenau in Unterfranken to Ontario (California) | 5,775.92 mi (9,295.45 km) |
| Alzenau in Unterfranken to Ontario (Oregon) | 5,171.65 mi (8,322.96 km) |
| Alzenau in Unterfranken to Opa-locka (Florida) | 4,837.60 mi (7,785.36 km) |
| Alzenau in Unterfranken to Opelika (Alabama) | 4,709.70 mi (7,579.52 km) |
| Alzenau in Unterfranken to Opelousas (Louisiana) | 5,084.37 mi (8,182.51 km) |
| Alzenau in Unterfranken to Orange (California) | 5,796.24 mi (9,328.14 km) |
| Alzenau in Unterfranken to Orange (Texas) | 5,170.80 mi (8,321.59 km) |
| Alzenau in Unterfranken to Orange City (Florida) | 4,728.61 mi (7,609.97 km) |
| Alzenau in Unterfranken to Orangeburg (South Carolina) | 4,486.08 mi (7,219.65 km) |
