| Gretna to Altus (Oklahoma) | 631.85 mi (1,016.86 km) |
| Gretna to Alum Rock (California) | 1,888.93 mi (3,039.94 km) |
| Gretna to Alvin (Texas) | 316.82 mi (509.88 km) |
| Gretna to Amarillo (Texas) | 776.49 mi (1,249.64 km) |
| Gretna to Amelia (Ohio) | 711.67 mi (1,145.32 km) |
| Gretna to American Canyon (California) | 1,919.28 mi (3,088.79 km) |
| Gretna to American Fork (Utah) | 1,419.78 mi (2,284.92 km) |
| Gretna to Americus (Georgia) | 376.02 mi (605.15 km) |
| Gretna to Ames (Iowa) | 860.35 mi (1,384.60 km) |
| Gretna to Amherst (Ohio) | 906.38 mi (1,458.68 km) |
| Gretna to Ammon (Idaho) | 1,525.24 mi (2,454.63 km) |
| Gretna to Amsterdam (New York) | 1,256.05 mi (2,021.41 km) |
| Gretna to Anacortes (Washington) | 2,139.32 mi (3,442.91 km) |
| Gretna to Anaheim (California) | 1,648.76 mi (2,653.43 km) |
| Gretna to Anchorage (Alaska) | 3,407.83 mi (5,484.38 km) |
