| Guaynabo to Mitchell (South Dakota) | 2,547.18 mi (4,099.28 km) |
| Guaynabo to Mitchellville (Maryland) | 1,558.39 mi (2,507.98 km) |
| Guaynabo to Moberly (Missouri) | 2,140.52 mi (3,444.83 km) |
| Guaynabo to Mobile (Alabama) | 1,618.13 mi (2,604.12 km) |
| Guaynabo to Modesto (California) | 3,546.71 mi (5,707.88 km) |
| Guaynabo to Mokena (Illinois) | 2,050.38 mi (3,299.77 km) |
| Guaynabo to Moline (Illinois) | 2,147.47 mi (3,456.02 km) |
| Guaynabo to Moncks Corner (South Carolina) | 1,335.69 mi (2,149.59 km) |
| Guaynabo to Monfort Heights (Ohio) | 1,813.97 mi (2,919.29 km) |
| Guaynabo to Monmouth (Oregon) | 3,731.45 mi (6,005.18 km) |
| Guaynabo to Monroe (Georgia) | 1,520.96 mi (2,447.75 km) |
| Guaynabo to Monroe (Louisiana) | 1,883.30 mi (3,030.88 km) |
| Guaynabo to Monroe (Michigan) | 1,917.29 mi (3,085.58 km) |
| Guaynabo to Monroe (North Carolina) | 1,450.40 mi (2,334.19 km) |
| Guaynabo to Monroe (Ohio) | 1,818.71 mi (2,926.93 km) |
