| Guaynabo to Monticello (Minnesota) | 2,445.10 mi (3,935.00 km) |
| Guaynabo to Montrose (Colorado) | 2,857.89 mi (4,599.33 km) |
| Guaynabo to Moody (Alabama) | 1,639.56 mi (2,638.62 km) |
| Guaynabo to Moore (Oklahoma) | 2,245.01 mi (3,612.99 km) |
| Guaynabo to Moorestown-Lenola (New Jersey) | 1,581.82 mi (2,545.69 km) |
| Guaynabo to Mooresville (North Carolina) | 1,490.40 mi (2,398.56 km) |
| Guaynabo to Moorhead (Minnesota) | 2,622.98 mi (4,221.27 km) |
| Guaynabo to Moorpark (California) | 3,406.27 mi (5,481.86 km) |
| Guaynabo to Moraga (California) | 3,609.03 mi (5,808.17 km) |
| Guaynabo to Moreno Valley (California) | 3,308.75 mi (5,324.92 km) |
| Guaynabo to Morgan City (Louisiana) | 1,759.56 mi (2,831.75 km) |
| Guaynabo to Morgan Hill (California) | 3,578.14 mi (5,758.46 km) |
| Guaynabo to Morganton (North Carolina) | 1,531.10 mi (2,464.06 km) |
| Guaynabo to Morgantown (West Virginia) | 1,684.95 mi (2,711.66 km) |
| Guaynabo to Morris (Illinois) | 2,063.30 mi (3,320.56 km) |
