| Gretna to Mineral Wells (Texas) | 514.16 mi (827.46 km) |
| Gretna to Minneapolis (Minnesota) | 1,054.71 mi (1,697.40 km) |
| Gretna to Minnehaha (Washington) | 2,063.53 mi (3,320.93 km) |
| Gretna to Minneola (Florida) | 509.37 mi (819.76 km) |
| Gretna to Minnetonka (Minnesota) | 1,054.38 mi (1,696.86 km) |
| Gretna to Minooka (Illinois) | 803.51 mi (1,293.12 km) |
| Gretna to Minot (North Dakota) | 1,398.72 mi (2,251.02 km) |
| Gretna to Mint Hill (North Carolina) | 656.88 mi (1,057.15 km) |
| Gretna to Miramar (Florida) | 652.02 mi (1,049.32 km) |
| Gretna to Mishawaka (Indiana) | 841.22 mi (1,353.81 km) |
| Gretna to Mission (Texas) | 565.54 mi (910.14 km) |
| Gretna to Mission Bend (Texas) | 336.90 mi (542.19 km) |
| Gretna to Mission Viejo (California) | 1,636.70 mi (2,634.01 km) |
| Gretna to Missoula (Montana) | 1,735.99 mi (2,793.80 km) |
| Gretna to Missouri City (Texas) | 329.91 mi (530.94 km) |
