| Houthulst to Oak Harbor (Washington) | 4,860.61 mi (7,822.39 km) |
| Houthulst to Oak Hills (Oregon) | 5,026.27 mi (8,088.99 km) |
| Houthulst to Oak Lawn (Illinois) | 4,094.24 mi (6,589.04 km) |
| Houthulst to Oak Park (California) | 5,571.43 mi (8,966.36 km) |
| Houthulst to Oak Park (Illinois) | 4,087.49 mi (6,578.18 km) |
| Houthulst to Oak Park (Michigan) | 3,885.20 mi (6,252.62 km) |
| Houthulst to Oak Ridge (Florida) | 4,481.95 mi (7,213.00 km) |
| Houthulst to Oak Ridge (New Jersey) | 3,604.96 mi (5,801.63 km) |
| Houthulst to Oak Ridge (Tennessee) | 4,233.01 mi (6,812.36 km) |
| Houthulst to Oakdale (California) | 5,425.77 mi (8,731.94 km) |
| Houthulst to Oakdale (Minnesota) | 4,130.27 mi (6,647.02 km) |
| Houthulst to Oakland (California) | 5,463.67 mi (8,792.94 km) |
| Houthulst to Oakland (New Jersey) | 3,594.61 mi (5,784.96 km) |
| Houthulst to Oakland Park (Florida) | 4,543.45 mi (7,311.97 km) |
| Houthulst to Oakleaf Plantation (Florida) | 4,415.15 mi (7,105.50 km) |
