| Castelldefels to Alum Rock (California) | 5,948.27 mi (9,572.82 km) |
| Castelldefels to Alvin (Texas) | 5,255.37 mi (8,457.70 km) |
| Castelldefels to Amarillo (Texas) | 5,284.55 mi (8,504.66 km) |
| Castelldefels to Amelia (Ohio) | 4,352.24 mi (7,004.25 km) |
| Castelldefels to American Canyon (California) | 5,919.37 mi (9,526.30 km) |
| Castelldefels to American Fork (Utah) | 5,434.86 mi (8,746.56 km) |
| Castelldefels to Americus (Georgia) | 4,621.58 mi (7,437.72 km) |
| Castelldefels to Ames (Iowa) | 4,644.38 mi (7,474.40 km) |
| Castelldefels to Amherst (Ohio) | 4,176.58 mi (6,721.55 km) |
| Castelldefels to Ammon (Idaho) | 5,288.72 mi (8,511.37 km) |
| Castelldefels to Amsterdam (New York) | 3,764.23 mi (6,057.95 km) |
| Castelldefels to Anacortes (Washington) | 5,376.16 mi (8,652.10 km) |
| Castelldefels to Anaheim (California) | 5,993.21 mi (9,645.14 km) |
| Castelldefels to Anchorage (Alaska) | 5,175.27 mi (8,328.79 km) |
| Castelldefels to Anderson (California) | 5,797.99 mi (9,330.97 km) |
