| Allen Park to Olympia Heights (Florida) | 1,154.08 mi (1,857.32 km) |
| Allen Park to Omaha (Nebraska) | 664.80 mi (1,069.90 km) |
| Allen Park to On Top of the World Designated Place (Florida) | 910.29 mi (1,464.98 km) |
| Allen Park to Onalaska (Wisconsin) | 418.81 mi (674.00 km) |
| Allen Park to Oneida (New York) | 387.49 mi (623.61 km) |
| Allen Park to Oneonta (New York) | 415.87 mi (669.28 km) |
| Allen Park to Ontario (California) | 1,938.42 mi (3,119.59 km) |
| Allen Park to Ontario (Oregon) | 1,694.69 mi (2,727.34 km) |
| Allen Park to Opa-locka (Florida) | 1,142.73 mi (1,839.05 km) |
| Allen Park to Opelika (Alabama) | 673.67 mi (1,084.16 km) |
| Allen Park to Opelousas (Louisiana) | 947.81 mi (1,525.36 km) |
| Allen Park to Orange (California) | 1,956.88 mi (3,149.29 km) |
| Allen Park to Orange (Texas) | 1,022.53 mi (1,645.61 km) |
| Allen Park to Orange City (Florida) | 926.89 mi (1,491.69 km) |
| Allen Park to Orangeburg (South Carolina) | 618.99 mi (996.16 km) |
