| Langenfeld to Odessa (Texas) | 5,279.36 mi (8,496.31 km) |
| Langenfeld to Ogden (Utah) | 5,075.41 mi (8,168.08 km) |
| Langenfeld to Oildale (California) | 5,619.37 mi (9,043.50 km) |
| Langenfeld to Ojus (Florida) | 4,721.59 mi (7,598.66 km) |
| Langenfeld to Okemos (Michigan) | 4,067.54 mi (6,546.08 km) |
| Langenfeld to Oklahoma City (Oklahoma) | 4,912.26 mi (7,905.52 km) |
| Langenfeld to Okmulgee (Oklahoma) | 4,849.82 mi (7,805.03 km) |
| Langenfeld to Olathe (Kansas) | 4,636.82 mi (7,462.24 km) |
| Langenfeld to Old Jamestown (Missouri) | 4,473.63 mi (7,199.60 km) |
| Langenfeld to Oldsmar (Florida) | 4,719.14 mi (7,594.72 km) |
| Langenfeld to Olean (New York) | 3,869.17 mi (6,226.83 km) |
| Langenfeld to Olive Branch (Mississippi) | 4,653.15 mi (7,488.52 km) |
| Langenfeld to Olivehurst (California) | 5,472.41 mi (8,806.99 km) |
| Langenfeld to Olney (Maryland) | 3,950.15 mi (6,357.15 km) |
| Langenfeld to Olympia (Washington) | 5,030.44 mi (8,095.70 km) |
