| Barcelona to Mitchell (South Dakota) | 4,756.85 mi (7,655.41 km) |
| Barcelona to Mitchellville (Maryland) | 4,021.47 mi (6,471.93 km) |
| Barcelona to Moberly (Missouri) | 4,704.57 mi (7,571.27 km) |
| Barcelona to Mobile (Alabama) | 4,870.29 mi (7,837.98 km) |
| Barcelona to Modesto (California) | 5,907.19 mi (9,506.70 km) |
| Barcelona to Mokena (Illinois) | 4,424.53 mi (7,120.59 km) |
| Barcelona to Moline (Illinois) | 4,538.55 mi (7,304.08 km) |
| Barcelona to Moncks Corner (South Carolina) | 4,383.47 mi (7,054.51 km) |
| Barcelona to Monfort Heights (Ohio) | 4,369.31 mi (7,031.72 km) |
| Barcelona to Monmouth (Oregon) | 5,590.06 mi (8,996.33 km) |
| Barcelona to Monroe (Georgia) | 4,535.57 mi (7,299.29 km) |
| Barcelona to Monroe (Louisiana) | 4,977.10 mi (8,009.86 km) |
| Barcelona to Monroe (Michigan) | 4,214.59 mi (6,782.73 km) |
| Barcelona to Monroe (North Carolina) | 4,339.75 mi (6,984.15 km) |
| Barcelona to Monroe (Ohio) | 4,348.60 mi (6,998.40 km) |
