| San Juan to Maryland Heights (Missouri) | 2,028.50 mi (3,264.55 km) |
| San Juan to Marysville (California) | 3,592.04 mi (5,780.84 km) |
| San Juan to Marysville (Ohio) | 1,825.71 mi (2,938.19 km) |
| San Juan to Marysville (Washington) | 3,727.69 mi (5,999.14 km) |
| San Juan to Maryville (Missouri) | 2,284.71 mi (3,676.88 km) |
| San Juan to Maryville (Tennessee) | 1,622.72 mi (2,611.52 km) |
| San Juan to Mason (Ohio) | 1,812.84 mi (2,917.48 km) |
| San Juan to Mason City (Iowa) | 2,328.66 mi (3,747.61 km) |
| San Juan to Massapequa (New York) | 1,600.26 mi (2,575.37 km) |
| San Juan to Massapequa Park (New York) | 1,600.85 mi (2,576.31 km) |
| San Juan to Massillon (Ohio) | 1,797.89 mi (2,893.42 km) |
| San Juan to Mastic (New York) | 1,599.91 mi (2,574.80 km) |
| San Juan to Mastic Beach (New York) | 1,596.88 mi (2,569.93 km) |
| San Juan to Matteson (Illinois) | 2,045.48 mi (3,291.88 km) |
| San Juan to Matthews (North Carolina) | 1,462.99 mi (2,354.46 km) |
