| Alpena to Oakley (California) | 2,018.01 mi (3,247.67 km) |
| Alpena to Oakton (Virginia) | 530.73 mi (854.12 km) |
| Alpena to Oakville (Missouri) | 578.60 mi (931.16 km) |
| Alpena to Oatfield (Oregon) | 1,885.84 mi (3,034.96 km) |
| Alpena to Ocala (Florida) | 1,100.56 mi (1,771.18 km) |
| Alpena to Ocean Acres (New Jersey) | 594.36 mi (956.53 km) |
| Alpena to Ocean City (New Jersey) | 604.12 mi (972.24 km) |
| Alpena to Ocean Pines (Maryland) | 628.92 mi (1,012.15 km) |
| Alpena to Ocean Pointe (Hawaii) | 4,449.16 mi (7,160.24 km) |
| Alpena to Ocean Springs (Mississippi) | 1,053.93 mi (1,696.14 km) |
| Alpena to Oceanside (California) | 1,972.17 mi (3,173.90 km) |
| Alpena to Oceanside (New York) | 583.12 mi (938.45 km) |
| Alpena to Ocoee (Florida) | 1,144.43 mi (1,841.78 km) |
| Alpena to Oconomowoc (Wisconsin) | 285.47 mi (459.42 km) |
| Alpena to Odenton (Maryland) | 540.00 mi (869.05 km) |
