| Niederkassel to Coldwater (Michigan) | 4,138.92 mi (6,660.95 km) |
| Niederkassel to Colesville (Maryland) | 3,962.29 mi (6,376.69 km) |
| Niederkassel to College (Alaska) | 4,331.18 mi (6,970.36 km) |
| Niederkassel to College Park (Georgia) | 4,521.61 mi (7,276.82 km) |
| Niederkassel to College Park (Maryland) | 3,963.14 mi (6,378.05 km) |
| Niederkassel to College Station (Texas) | 5,140.19 mi (8,272.33 km) |
| Niederkassel to Collegedale (Tennessee) | 4,474.59 mi (7,201.15 km) |
| Niederkassel to Colleyville (Texas) | 5,049.69 mi (8,126.69 km) |
| Niederkassel to Collierville (Tennessee) | 4,656.09 mi (7,493.25 km) |
| Niederkassel to Collinsville (Illinois) | 4,485.24 mi (7,218.29 km) |
| Niederkassel to Colonia (New Jersey) | 3,785.84 mi (6,092.73 km) |
| Niederkassel to Colonial Heights (Virginia) | 4,062.14 mi (6,537.38 km) |
| Niederkassel to Colonial Park (Pennsylvania) | 3,898.55 mi (6,274.11 km) |
| Niederkassel to Colorado Springs (Colorado) | 4,996.52 mi (8,041.12 km) |
| Niederkassel to Colton (California) | 5,667.84 mi (9,121.51 km) |
