| Middelharnis to Odessa (Texas) | 5,155.33 mi (8,296.70 km) |
| Middelharnis to Ogden (Utah) | 4,960.44 mi (7,983.05 km) |
| Middelharnis to Oildale (California) | 5,505.86 mi (8,860.83 km) |
| Middelharnis to Ojus (Florida) | 4,594.87 mi (7,394.72 km) |
| Middelharnis to Okemos (Michigan) | 3,941.93 mi (6,343.92 km) |
| Middelharnis to Oklahoma City (Oklahoma) | 4,787.78 mi (7,705.18 km) |
| Middelharnis to Okmulgee (Oklahoma) | 4,724.92 mi (7,604.02 km) |
| Middelharnis to Olathe (Kansas) | 4,512.67 mi (7,262.44 km) |
| Middelharnis to Old Jamestown (Missouri) | 4,348.17 mi (6,997.71 km) |
| Middelharnis to Oldsmar (Florida) | 4,591.82 mi (7,389.83 km) |
| Middelharnis to Olean (New York) | 3,742.33 mi (6,022.69 km) |
| Middelharnis to Olive Branch (Mississippi) | 4,526.63 mi (7,284.90 km) |
| Middelharnis to Olivehurst (California) | 5,362.84 mi (8,630.65 km) |
| Middelharnis to Olney (Maryland) | 3,822.76 mi (6,152.14 km) |
| Middelharnis to Olympia (Washington) | 4,927.05 mi (7,929.32 km) |
