| Niederkassel to Ashwaubenon (Wisconsin) | 4,132.55 mi (6,650.70 km) |
| Niederkassel to Aspen Hill (Maryland) | 3,964.65 mi (6,380.49 km) |
| Niederkassel to Astoria (Oregon) | 5,122.59 mi (8,244.01 km) |
| Niederkassel to Atascadero (California) | 5,681.61 mi (9,143.67 km) |
| Niederkassel to Atascocita (Texas) | 5,130.42 mi (8,256.61 km) |
| Niederkassel to Atchison (Kansas) | 4,628.04 mi (7,448.11 km) |
| Niederkassel to Athens (Alabama) | 4,562.69 mi (7,342.93 km) |
| Niederkassel to Athens (Georgia) | 4,462.20 mi (7,181.21 km) |
| Niederkassel to Athens (Ohio) | 4,151.82 mi (6,681.71 km) |
| Niederkassel to Athens (Tennessee) | 4,437.07 mi (7,140.77 km) |
| Niederkassel to Athens (Texas) | 5,036.82 mi (8,105.99 km) |
| Niederkassel to Atlanta (Georgia) | 4,513.64 mi (7,264.00 km) |
| Niederkassel to Atlantic Beach (Florida) | 4,562.05 mi (7,341.91 km) |
| Niederkassel to Atlantic City (New Jersey) | 3,845.81 mi (6,189.23 km) |
| Niederkassel to Attleboro (Massachusetts) | 3,605.91 mi (5,803.16 km) |
