| San Juan to Marrero (Louisiana) | 1,706.33 mi (2,746.07 km) |
| San Juan to Marshall (Minnesota) | 2,485.77 mi (4,000.45 km) |
| San Juan to Marshall (Missouri) | 2,163.97 mi (3,482.57 km) |
| San Juan to Marshall (Texas) | 2,007.47 mi (3,230.71 km) |
| San Juan to Marshalltown (Iowa) | 2,269.27 mi (3,652.03 km) |
| San Juan to Marshfield (Wisconsin) | 2,285.83 mi (3,678.69 km) |
| San Juan to Martha Lake (Washington) | 3,727.53 mi (5,998.88 km) |
| San Juan to Martin (Tennessee) | 1,859.42 mi (2,992.44 km) |
| San Juan to Martinez (California) | 3,611.97 mi (5,812.90 km) |
| San Juan to Martinez (Georgia) | 1,439.84 mi (2,317.20 km) |
| San Juan to Martinsburg (West Virginia) | 1,620.14 mi (2,607.36 km) |
| San Juan to Martinsville (Indiana) | 1,894.74 mi (3,049.28 km) |
| San Juan to Martinsville (New Jersey) | 1,615.32 mi (2,599.61 km) |
| San Juan to Martinsville (Virginia) | 1,516.30 mi (2,440.25 km) |
| San Juan to Maryland City (Maryland) | 1,568.64 mi (2,524.49 km) |
