| Ostend to Orangevale (California) | 5,368.74 mi (8,640.14 km) |
| Ostend to Orchards (Washington) | 4,995.03 mi (8,038.72 km) |
| Ostend to Orcutt (California) | 5,569.01 mi (8,962.46 km) |
| Ostend to Oregon (Ohio) | 3,922.81 mi (6,313.15 km) |
| Ostend to Oregon (Wisconsin) | 4,088.29 mi (6,579.47 km) |
| Ostend to Oregon City (Oregon) | 5,016.89 mi (8,073.91 km) |
| Ostend to Orem (Utah) | 4,990.36 mi (8,031.21 km) |
| Ostend to Orinda (California) | 5,443.51 mi (8,760.49 km) |
| Ostend to Orland Park (Illinois) | 4,093.74 mi (6,588.24 km) |
| Ostend to Orlando (Florida) | 4,472.69 mi (7,198.09 km) |
| Ostend to Ormond Beach (Florida) | 4,421.82 mi (7,116.24 km) |
| Ostend to Oro Valley (Arizona) | 5,405.75 mi (8,699.72 km) |
| Ostend to Oroville (California) | 5,330.90 mi (8,579.26 km) |
| Ostend to Oshkosh (Wisconsin) | 4,006.33 mi (6,447.57 km) |
| Ostend to Oskaloosa (Iowa) | 4,286.42 mi (6,898.33 km) |
