| Middelkerke to Orangevale (California) | 5,367.99 mi (8,638.95 km) |
| Middelkerke to Orchards (Washington) | 4,994.71 mi (8,038.21 km) |
| Middelkerke to Orcutt (California) | 5,568.04 mi (8,960.89 km) |
| Middelkerke to Oregon (Ohio) | 3,920.23 mi (6,309.00 km) |
| Middelkerke to Oregon (Wisconsin) | 4,086.08 mi (6,575.91 km) |
| Middelkerke to Oregon City (Oregon) | 5,016.56 mi (8,073.38 km) |
| Middelkerke to Orem (Utah) | 4,989.14 mi (8,029.25 km) |
| Middelkerke to Orinda (California) | 5,442.79 mi (8,759.33 km) |
| Middelkerke to Orland Park (Illinois) | 4,091.37 mi (6,584.42 km) |
| Middelkerke to Orlando (Florida) | 4,469.21 mi (7,192.50 km) |
| Middelkerke to Ormond Beach (Florida) | 4,418.38 mi (7,110.69 km) |
| Middelkerke to Oro Valley (Arizona) | 5,404.08 mi (8,697.03 km) |
| Middelkerke to Oroville (California) | 5,330.22 mi (8,578.17 km) |
| Middelkerke to Oshkosh (Wisconsin) | 4,004.16 mi (6,444.07 km) |
| Middelkerke to Oskaloosa (Iowa) | 4,284.26 mi (6,894.85 km) |
