| San Juan to Montgomeryville (Pennsylvania) | 1,605.57 mi (2,583.92 km) |
| San Juan to Monticello (Minnesota) | 2,446.16 mi (3,936.72 km) |
| San Juan to Montrose (Colorado) | 2,859.95 mi (4,602.65 km) |
| San Juan to Moody (Alabama) | 1,641.31 mi (2,641.43 km) |
| San Juan to Moore (Oklahoma) | 2,247.08 mi (3,616.32 km) |
| San Juan to Moorestown-Lenola (New Jersey) | 1,581.85 mi (2,545.75 km) |
| San Juan to Mooresville (North Carolina) | 1,491.45 mi (2,400.26 km) |
| San Juan to Moorhead (Minnesota) | 2,624.05 mi (4,223.00 km) |
| San Juan to Moorpark (California) | 3,408.73 mi (5,485.82 km) |
| San Juan to Moraga (California) | 3,611.28 mi (5,811.79 km) |
| San Juan to Moreno Valley (California) | 3,311.22 mi (5,328.89 km) |
| San Juan to Morgan City (Louisiana) | 1,761.96 mi (2,835.60 km) |
| San Juan to Morgan Hill (California) | 3,580.44 mi (5,762.16 km) |
| San Juan to Morganton (North Carolina) | 1,532.22 mi (2,465.88 km) |
| San Juan to Morgantown (West Virginia) | 1,685.54 mi (2,712.61 km) |
