| Castelldefels to Accokeek (Maryland) | 4,033.00 mi (6,490.49 km) |
| Castelldefels to Acworth (Georgia) | 4,563.95 mi (7,344.96 km) |
| Castelldefels to Ada (Oklahoma) | 5,080.85 mi (8,176.84 km) |
| Castelldefels to Addison (Illinois) | 4,410.35 mi (7,097.77 km) |
| Castelldefels to Addison (Texas) | 5,167.62 mi (8,316.48 km) |
| Castelldefels to Adelanto (California) | 5,938.81 mi (9,557.59 km) |
| Castelldefels to Adelphi (Maryland) | 4,020.00 mi (6,469.56 km) |
| Castelldefels to Adrian (Michigan) | 4,239.13 mi (6,822.23 km) |
| Castelldefels to Affton (Missouri) | 4,643.01 mi (7,472.21 km) |
| Castelldefels to Agoura Hills (California) | 6,010.47 mi (9,672.91 km) |
| Castelldefels to Aguadilla (Puerto Rico) | 4,314.38 mi (6,943.32 km) |
| Castelldefels to Aiken (South Carolina) | 4,445.04 mi (7,153.60 km) |
| Castelldefels to Akron (Ohio) | 4,156.28 mi (6,688.89 km) |
| Castelldefels to Alabaster (Alabama) | 4,698.31 mi (7,561.20 km) |
| Castelldefels to Alachua (Florida) | 4,629.71 mi (7,450.80 km) |
