| Gretna to Mill Creek East (Washington) | 2,102.05 mi (3,382.92 km) |
| Gretna to Mill Valley (California) | 1,932.26 mi (3,109.67 km) |
| Gretna to Millbrae (California) | 1,922.22 mi (3,093.51 km) |
| Gretna to Millbrook (Alabama) | 281.61 mi (453.21 km) |
| Gretna to Millcreek (Utah) | 1,430.20 mi (2,301.69 km) |
| Gretna to Milledgeville (Georgia) | 457.18 mi (735.76 km) |
| Gretna to Miller Place (New York) | 1,222.37 mi (1,967.21 km) |
| Gretna to Millington (Tennessee) | 374.93 mi (603.39 km) |
| Gretna to Millville (New Jersey) | 1,072.43 mi (1,725.91 km) |
| Gretna to Milpitas (California) | 1,893.15 mi (3,046.74 km) |
| Gretna to Milton (Georgia) | 445.03 mi (716.21 km) |
| Gretna to Milwaukee (Wisconsin) | 916.12 mi (1,474.35 km) |
| Gretna to Milwaukie (Oregon) | 2,058.50 mi (3,312.83 km) |
| Gretna to Minden (Louisiana) | 266.98 mi (429.66 km) |
| Gretna to Mineola (New York) | 1,186.66 mi (1,909.74 km) |
