| Boortmeerbeek to Orangevale (California) | 5,428.13 mi (8,735.73 km) |
| Boortmeerbeek to Orchards (Washington) | 5,050.71 mi (8,128.33 km) |
| Boortmeerbeek to Orcutt (California) | 5,630.30 mi (9,061.09 km) |
| Boortmeerbeek to Oregon (Ohio) | 3,993.93 mi (6,427.62 km) |
| Boortmeerbeek to Oregon (Wisconsin) | 4,157.73 mi (6,691.22 km) |
| Boortmeerbeek to Oregon City (Oregon) | 5,072.71 mi (8,163.73 km) |
| Boortmeerbeek to Orem (Utah) | 5,053.52 mi (8,132.85 km) |
| Boortmeerbeek to Orinda (California) | 5,502.74 mi (8,855.80 km) |
| Boortmeerbeek to Orland Park (Illinois) | 4,163.97 mi (6,701.26 km) |
| Boortmeerbeek to Orlando (Florida) | 4,546.03 mi (7,316.14 km) |
| Boortmeerbeek to Ormond Beach (Florida) | 4,495.15 mi (7,234.24 km) |
| Boortmeerbeek to Oro Valley (Arizona) | 5,472.08 mi (8,806.46 km) |
| Boortmeerbeek to Oroville (California) | 5,389.79 mi (8,674.03 km) |
| Boortmeerbeek to Oshkosh (Wisconsin) | 4,075.58 mi (6,559.01 km) |
| Boortmeerbeek to Oskaloosa (Iowa) | 4,355.61 mi (7,009.68 km) |
