| San Juan to Missouri City (Texas) | 2,006.75 mi (3,229.55 km) |
| San Juan to Mitchell (South Dakota) | 2,548.55 mi (4,101.49 km) |
| San Juan to Mitchellville (Maryland) | 1,558.70 mi (2,508.49 km) |
| San Juan to Moberly (Missouri) | 2,142.02 mi (3,447.25 km) |
| San Juan to Mobile (Alabama) | 1,620.29 mi (2,607.61 km) |
| San Juan to Modesto (California) | 3,548.97 mi (5,711.52 km) |
| San Juan to Mokena (Illinois) | 2,051.44 mi (3,301.47 km) |
| San Juan to Moline (Illinois) | 2,148.68 mi (3,457.97 km) |
| San Juan to Moncks Corner (South Carolina) | 1,336.94 mi (2,151.60 km) |
| San Juan to Monfort Heights (Ohio) | 1,815.00 mi (2,920.96 km) |
| San Juan to Monmouth (Oregon) | 3,733.26 mi (6,008.10 km) |
| San Juan to Monroe (Georgia) | 1,522.49 mi (2,450.20 km) |
| San Juan to Monroe (Louisiana) | 1,885.45 mi (3,034.33 km) |
| San Juan to Monroe (Michigan) | 1,917.99 mi (3,086.71 km) |
| San Juan to Monroe (North Carolina) | 1,451.49 mi (2,335.95 km) |
