| Langenfeld to Oak Harbor (Washington) | 4,949.52 mi (7,965.49 km) |
| Langenfeld to Oak Hills (Oregon) | 5,118.77 mi (8,237.86 km) |
| Langenfeld to Oak Lawn (Illinois) | 4,238.43 mi (6,821.10 km) |
| Langenfeld to Oak Park (California) | 5,685.42 mi (9,149.80 km) |
| Langenfeld to Oak Park (Illinois) | 4,231.41 mi (6,809.79 km) |
| Langenfeld to Oak Park (Michigan) | 4,032.77 mi (6,490.12 km) |
| Langenfeld to Oak Ridge (Florida) | 4,646.00 mi (7,477.02 km) |
| Langenfeld to Oak Ridge (New Jersey) | 3,761.96 mi (6,054.29 km) |
| Langenfeld to Oak Ridge (Tennessee) | 4,387.76 mi (7,061.42 km) |
| Langenfeld to Oakdale (California) | 5,531.88 mi (8,902.70 km) |
| Langenfeld to Oakdale (Minnesota) | 4,264.03 mi (6,862.29 km) |
| Langenfeld to Oakland (California) | 5,567.46 mi (8,959.95 km) |
| Langenfeld to Oakland (New Jersey) | 3,751.80 mi (6,037.95 km) |
| Langenfeld to Oakland Park (Florida) | 4,709.96 mi (7,579.94 km) |
| Langenfeld to Oakleaf Plantation (Florida) | 4,577.55 mi (7,366.86 km) |
