| Unterwellenborn to Odessa (Texas) | 5,456.24 mi (8,780.97 km) |
| Unterwellenborn to Ogden (Utah) | 5,229.65 mi (8,416.32 km) |
| Unterwellenborn to Oildale (California) | 5,769.93 mi (9,285.81 km) |
| Unterwellenborn to Ojus (Florida) | 4,918.22 mi (7,915.11 km) |
| Unterwellenborn to Okemos (Michigan) | 4,249.92 mi (6,839.58 km) |
| Unterwellenborn to Oklahoma City (Oklahoma) | 5,090.66 mi (8,192.62 km) |
| Unterwellenborn to Okmulgee (Oklahoma) | 5,029.55 mi (8,094.27 km) |
| Unterwellenborn to Olathe (Kansas) | 4,814.29 mi (7,747.86 km) |
| Unterwellenborn to Old Jamestown (Missouri) | 4,655.32 mi (7,492.01 km) |
| Unterwellenborn to Oldsmar (Florida) | 4,913.99 mi (7,908.30 km) |
| Unterwellenborn to Olean (New York) | 4,056.56 mi (6,528.41 km) |
| Unterwellenborn to Olive Branch (Mississippi) | 4,838.89 mi (7,787.44 km) |
| Unterwellenborn to Olivehurst (California) | 5,614.60 mi (9,035.83 km) |
| Unterwellenborn to Olney (Maryland) | 4,141.05 mi (6,664.37 km) |
| Unterwellenborn to Olympia (Washington) | 5,160.44 mi (8,304.93 km) |
