| Guaynabo to Marshall (Minnesota) | 2,484.54 mi (3,998.48 km) |
| Guaynabo to Marshall (Missouri) | 2,162.41 mi (3,480.06 km) |
| Guaynabo to Marshall (Texas) | 2,005.24 mi (3,227.13 km) |
| Guaynabo to Marshalltown (Iowa) | 2,267.97 mi (3,649.95 km) |
| Guaynabo to Marshfield (Wisconsin) | 2,284.90 mi (3,677.19 km) |
| Guaynabo to Martha Lake (Washington) | 3,725.93 mi (5,996.30 km) |
| Guaynabo to Martin (Tennessee) | 1,857.81 mi (2,989.86 km) |
| Guaynabo to Martinez (California) | 3,609.72 mi (5,809.29 km) |
| Guaynabo to Martinez (Georgia) | 1,438.43 mi (2,314.92 km) |
| Guaynabo to Martinsburg (West Virginia) | 1,619.73 mi (2,606.71 km) |
| Guaynabo to Martinsville (Indiana) | 1,893.59 mi (3,047.44 km) |
| Guaynabo to Martinsville (New Jersey) | 1,615.36 mi (2,599.68 km) |
| Guaynabo to Martinsville (Virginia) | 1,515.45 mi (2,438.89 km) |
| Guaynabo to Maryland City (Maryland) | 1,568.34 mi (2,524.00 km) |
| Guaynabo to Maryland Heights (Missouri) | 2,027.04 mi (3,262.20 km) |
