| Alpena to Odessa (Texas) | 1,363.65 mi (2,194.58 km) |
| Alpena to Ogden (Utah) | 1,454.49 mi (2,340.77 km) |
| Alpena to Oildale (California) | 1,972.83 mi (3,174.96 km) |
| Alpena to Ojus (Florida) | 1,333.42 mi (2,145.93 km) |
| Alpena to Okemos (Michigan) | 170.66 mi (274.64 km) |
| Alpena to Oklahoma City (Oklahoma) | 992.86 mi (1,597.85 km) |
| Alpena to Okmulgee (Oklahoma) | 928.08 mi (1,493.60 km) |
| Alpena to Olathe (Kansas) | 723.16 mi (1,163.82 km) |
| Alpena to Old Jamestown (Missouri) | 555.66 mi (894.25 km) |
| Alpena to Oldsmar (Florida) | 1,176.96 mi (1,894.14 km) |
| Alpena to Olean (New York) | 324.81 mi (522.74 km) |
| Alpena to Olive Branch (Mississippi) | 776.01 mi (1,248.86 km) |
| Alpena to Olivehurst (California) | 1,978.96 mi (3,184.83 km) |
| Alpena to Olney (Maryland) | 523.37 mi (842.29 km) |
| Alpena to Olympia (Washington) | 1,876.52 mi (3,019.96 km) |
