| Niederkassel to Accokeek (Maryland) | 3,980.70 mi (6,406.32 km) |
| Niederkassel to Acworth (Georgia) | 4,509.00 mi (7,256.53 km) |
| Niederkassel to Ada (Oklahoma) | 4,932.82 mi (7,938.60 km) |
| Niederkassel to Addison (Illinois) | 4,251.47 mi (6,842.07 km) |
| Niederkassel to Addison (Texas) | 5,034.46 mi (8,102.18 km) |
| Niederkassel to Adelanto (California) | 5,640.28 mi (9,077.16 km) |
| Niederkassel to Adelphi (Maryland) | 3,964.13 mi (6,379.64 km) |
| Niederkassel to Adrian (Michigan) | 4,105.24 mi (6,606.74 km) |
| Niederkassel to Affton (Missouri) | 4,503.53 mi (7,247.73 km) |
| Niederkassel to Agoura Hills (California) | 5,704.96 mi (9,181.25 km) |
| Niederkassel to Aguadilla (Puerto Rico) | 4,552.57 mi (7,326.66 km) |
| Niederkassel to Aiken (South Carolina) | 4,416.74 mi (7,108.06 km) |
| Niederkassel to Akron (Ohio) | 4,047.28 mi (6,513.46 km) |
| Niederkassel to Alabaster (Alabama) | 4,636.21 mi (7,461.25 km) |
| Niederkassel to Alachua (Florida) | 4,634.17 mi (7,457.98 km) |
