| Middelkerke to Odessa (Texas) | 5,126.71 mi (8,250.64 km) |
| Middelkerke to Ogden (Utah) | 4,946.15 mi (7,960.06 km) |
| Middelkerke to Oildale (California) | 5,493.20 mi (8,840.45 km) |
| Middelkerke to Ojus (Florida) | 4,546.38 mi (7,316.70 km) |
| Middelkerke to Okemos (Michigan) | 3,909.65 mi (6,291.98 km) |
| Middelkerke to Oklahoma City (Oklahoma) | 4,758.22 mi (7,657.61 km) |
| Middelkerke to Okmulgee (Oklahoma) | 4,694.38 mi (7,554.88 km) |
| Middelkerke to Olathe (Kansas) | 4,483.93 mi (7,216.19 km) |
| Middelkerke to Old Jamestown (Missouri) | 4,316.26 mi (6,946.35 km) |
| Middelkerke to Oldsmar (Florida) | 4,546.38 mi (7,316.69 km) |
| Middelkerke to Olean (New York) | 3,705.69 mi (5,963.73 km) |
| Middelkerke to Olive Branch (Mississippi) | 4,491.21 mi (7,227.91 km) |
| Middelkerke to Olivehurst (California) | 5,354.66 mi (8,617.49 km) |
| Middelkerke to Olney (Maryland) | 3,782.49 mi (6,087.33 km) |
| Middelkerke to Olympia (Washington) | 4,925.22 mi (7,926.37 km) |
