| Guaynabo to Mountain Brook (Alabama) | 1,646.77 mi (2,650.22 km) |
| Guaynabo to Mountain Home (Arkansas) | 2,022.10 mi (3,254.25 km) |
| Guaynabo to Mountain Home (Idaho) | 3,340.49 mi (5,376.00 km) |
| Guaynabo to Mountain House (California) | 3,577.12 mi (5,756.83 km) |
| Guaynabo to Mountain Park (Georgia) | 1,541.37 mi (2,480.60 km) |
| Guaynabo to Mountain Top (Pennsylvania) | 1,675.37 mi (2,696.25 km) |
| Guaynabo to Mountain View (California) | 3,603.81 mi (5,799.77 km) |
| Guaynabo to Mountlake Terrace (Washington) | 3,728.46 mi (6,000.38 km) |
| Guaynabo to Mukilteo (Washington) | 3,730.08 mi (6,002.98 km) |
| Guaynabo to Muncie (Indiana) | 1,893.92 mi (3,047.98 km) |
| Guaynabo to Mundelein (Illinois) | 2,091.20 mi (3,365.47 km) |
| Guaynabo to Munhall (Pennsylvania) | 1,727.47 mi (2,780.10 km) |
| Guaynabo to Munster (Indiana) | 2,037.40 mi (3,278.87 km) |
| Guaynabo to Murfreesboro (Tennessee) | 1,729.03 mi (2,782.60 km) |
| Guaynabo to Murphy (Texas) | 2,139.55 mi (3,443.28 km) |
