| Opelousas to Marrero (Louisiana) | 125.56 mi (202.08 km) |
| Opelousas to Marshall (Minnesota) | 982.98 mi (1,581.96 km) |
| Opelousas to Marshall (Missouri) | 596.85 mi (960.53 km) |
| Opelousas to Marshall (Texas) | 192.84 mi (310.35 km) |
| Opelousas to Marshalltown (Iowa) | 796.52 mi (1,281.87 km) |
| Opelousas to Marshfield (Wisconsin) | 982.30 mi (1,580.86 km) |
| Opelousas to Martha Lake (Washington) | 1,988.88 mi (3,200.79 km) |
| Opelousas to Martin (Tennessee) | 442.67 mi (712.40 km) |
| Opelousas to Martinez (California) | 1,782.25 mi (2,868.26 km) |
| Opelousas to Martinez (Georgia) | 620.02 mi (997.83 km) |
| Opelousas to Martinsburg (West Virginia) | 1,006.99 mi (1,620.60 km) |
| Opelousas to Martinsville (Indiana) | 692.14 mi (1,113.90 km) |
| Opelousas to Martinsville (New Jersey) | 1,201.71 mi (1,933.97 km) |
| Opelousas to Martinsville (Virginia) | 820.77 mi (1,320.91 km) |
| Opelousas to Maryland City (Maryland) | 1,047.48 mi (1,685.75 km) |
