| Oak Harbor to Odessa (Texas) | 1,551.44 mi (2,496.80 km) |
| Oak Harbor to Ogden (Utah) | 714.50 mi (1,149.88 km) |
| Oak Harbor to Oildale (California) | 907.88 mi (1,461.09 km) |
| Oak Harbor to Ojus (Florida) | 2,751.77 mi (4,428.54 km) |
| Oak Harbor to Okemos (Michigan) | 1,870.37 mi (3,010.08 km) |
| Oak Harbor to Oklahoma City (Oklahoma) | 1,555.49 mi (2,503.32 km) |
| Oak Harbor to Okmulgee (Oklahoma) | 1,611.93 mi (2,594.14 km) |
| Oak Harbor to Olathe (Kansas) | 1,525.09 mi (2,454.39 km) |
| Oak Harbor to Old Jamestown (Missouri) | 1,730.30 mi (2,784.65 km) |
| Oak Harbor to Oldsmar (Florida) | 2,540.23 mi (4,088.10 km) |
| Oak Harbor to Olean (New York) | 2,163.54 mi (3,481.88 km) |
| Oak Harbor to Olive Branch (Mississippi) | 1,907.18 mi (3,069.31 km) |
| Oak Harbor to Olivehurst (California) | 639.08 mi (1,028.49 km) |
| Oak Harbor to Olney (Maryland) | 2,324.09 mi (3,740.26 km) |
| Oak Harbor to Olympia (Washington) | 87.55 mi (140.89 km) |
