| Gretna to Smyrna (Delaware) | 1,044.14 mi (1,680.38 km) |
| Gretna to Smyrna (Georgia) | 424.17 mi (682.64 km) |
| Gretna to Smyrna (Tennessee) | 465.75 mi (749.55 km) |
| Gretna to Snellville (Georgia) | 447.31 mi (719.88 km) |
| Gretna to Snoqualmie (Washington) | 2,078.62 mi (3,345.21 km) |
| Gretna to Snyder (Texas) | 669.31 mi (1,077.16 km) |
| Gretna to Socastee (South Carolina) | 698.52 mi (1,124.15 km) |
| Gretna to Socorro (Texas) | 968.68 mi (1,558.94 km) |
| Gretna to Soddy-Daisy (Tennessee) | 465.81 mi (749.65 km) |
| Gretna to Solana Beach (California) | 1,613.12 mi (2,596.07 km) |
| Gretna to Soledad (California) | 1,856.17 mi (2,987.21 km) |
| Gretna to Solon (Ohio) | 927.57 mi (1,492.78 km) |
| Gretna to Somers Point (New Jersey) | 1,089.96 mi (1,754.13 km) |
| Gretna to Somerset (Kentucky) | 586.17 mi (943.35 km) |
| Gretna to Somerset (New Jersey) | 1,140.08 mi (1,834.79 km) |
