| Langenfeld to Frederick (Maryland) | 3,950.49 mi (6,357.69 km) |
| Langenfeld to Fredericksburg (Texas) | 5,240.62 mi (8,433.96 km) |
| Langenfeld to Fredericksburg (Virginia) | 4,006.11 mi (6,447.21 km) |
| Langenfeld to Frederickson (Washington) | 5,014.69 mi (8,070.36 km) |
| Langenfeld to Freeport (Illinois) | 4,279.03 mi (6,886.44 km) |
| Langenfeld to Freeport (New York) | 3,742.56 mi (6,023.07 km) |
| Langenfeld to Freeport (Texas) | 5,178.71 mi (8,334.32 km) |
| Langenfeld to Fremont (California) | 5,577.03 mi (8,975.36 km) |
| Langenfeld to Fremont (Nebraska) | 4,564.09 mi (7,345.19 km) |
| Langenfeld to Fremont (Ohio) | 4,082.33 mi (6,569.87 km) |
| Langenfeld to French Valley (California) | 5,670.48 mi (9,125.75 km) |
| Langenfeld to Fresno (California) | 5,560.84 mi (8,949.30 km) |
| Langenfeld to Fresno (Texas) | 5,151.41 mi (8,290.39 km) |
| Langenfeld to Fridley (Minnesota) | 4,269.40 mi (6,870.93 km) |
| Langenfeld to Friendly (Maryland) | 3,963.76 mi (6,379.06 km) |
