| Castelldefels to Manor (Texas) | 5,314.32 mi (8,552.57 km) |
| Castelldefels to Manorville (New York) | 3,764.55 mi (6,058.45 km) |
| Castelldefels to Mansfield (Ohio) | 4,212.48 mi (6,779.33 km) |
| Castelldefels to Mansfield (Texas) | 5,197.62 mi (8,364.76 km) |
| Castelldefels to Manteca (California) | 5,904.96 mi (9,503.12 km) |
| Castelldefels to Manville (New Jersey) | 3,858.14 mi (6,209.08 km) |
| Castelldefels to Maple Grove (Minnesota) | 4,515.06 mi (7,266.29 km) |
| Castelldefels to Maple Heights (Ohio) | 4,146.53 mi (6,673.20 km) |
| Castelldefels to Maple Valley (Washington) | 5,418.69 mi (8,720.54 km) |
| Castelldefels to Mapleton (Utah) | 5,439.44 mi (8,753.94 km) |
| Castelldefels to Maplewood (Minnesota) | 4,502.33 mi (7,245.79 km) |
| Castelldefels to Marana (Arizona) | 5,803.25 mi (9,339.42 km) |
| Castelldefels to Marco Island (Florida) | 4,747.95 mi (7,641.09 km) |
| Castelldefels to Margate (Florida) | 4,660.87 mi (7,500.94 km) |
| Castelldefels to Maricopa (Arizona) | 5,807.11 mi (9,345.64 km) |
