| Boortmeerbeek to Odessa (Texas) | 5,198.29 mi (8,365.85 km) |
| Boortmeerbeek to Ogden (Utah) | 5,009.96 mi (8,062.75 km) |
| Boortmeerbeek to Oildale (California) | 5,555.99 mi (8,941.50 km) |
| Boortmeerbeek to Ojus (Florida) | 4,623.44 mi (7,440.70 km) |
| Boortmeerbeek to Okemos (Michigan) | 3,982.74 mi (6,409.59 km) |
| Boortmeerbeek to Oklahoma City (Oklahoma) | 4,830.21 mi (7,773.46 km) |
| Boortmeerbeek to Okmulgee (Oklahoma) | 4,766.78 mi (7,671.40 km) |
| Boortmeerbeek to Olathe (Kansas) | 4,555.54 mi (7,331.44 km) |
| Boortmeerbeek to Old Jamestown (Missouri) | 4,389.21 mi (7,063.76 km) |
| Boortmeerbeek to Oldsmar (Florida) | 4,623.13 mi (7,440.20 km) |
| Boortmeerbeek to Olean (New York) | 3,780.33 mi (6,083.86 km) |
| Boortmeerbeek to Olive Branch (Mississippi) | 4,565.47 mi (7,347.42 km) |
| Boortmeerbeek to Olivehurst (California) | 5,414.42 mi (8,713.67 km) |
| Boortmeerbeek to Olney (Maryland) | 3,858.19 mi (6,209.16 km) |
| Boortmeerbeek to Olympia (Washington) | 4,980.30 mi (8,015.03 km) |
