| Hadamar to Oak Harbor (Washington) | 5,014.14 mi (8,069.47 km) |
| Hadamar to Oak Hills (Oregon) | 5,183.74 mi (8,342.42 km) |
| Hadamar to Oak Lawn (Illinois) | 4,303.71 mi (6,926.16 km) |
| Hadamar to Oak Park (California) | 5,751.83 mi (9,256.67 km) |
| Hadamar to Oak Park (Illinois) | 4,296.72 mi (6,914.90 km) |
| Hadamar to Oak Park (Michigan) | 4,097.54 mi (6,594.36 km) |
| Hadamar to Oak Ridge (Florida) | 4,706.02 mi (7,573.61 km) |
| Hadamar to Oak Ridge (New Jersey) | 3,824.62 mi (6,155.13 km) |
| Hadamar to Oak Ridge (Tennessee) | 4,451.07 mi (7,163.30 km) |
| Hadamar to Oakdale (California) | 5,597.91 mi (9,008.96 km) |
| Hadamar to Oakdale (Minnesota) | 4,330.27 mi (6,968.90 km) |
| Hadamar to Oakland (California) | 5,633.33 mi (9,065.97 km) |
| Hadamar to Oakland (New Jersey) | 3,814.40 mi (6,138.69 km) |
| Hadamar to Oakland Park (Florida) | 4,768.63 mi (7,674.37 km) |
| Hadamar to Oakleaf Plantation (Florida) | 4,638.33 mi (7,464.67 km) |
