| Gretna to Somersworth (New Hampshire) | 1,401.19 mi (2,255.00 km) |
| Gretna to Somerton (Arizona) | 1,464.34 mi (2,356.63 km) |
| Gretna to Somerville (Massachusetts) | 1,358.78 mi (2,186.74 km) |
| Gretna to Somerville (New Jersey) | 1,137.90 mi (1,831.27 km) |
| Gretna to Sonoma (California) | 1,931.13 mi (3,107.86 km) |
| Gretna to Soquel (California) | 1,893.08 mi (3,046.62 km) |
| Gretna to South Bend (Indiana) | 839.92 mi (1,351.73 km) |
| Gretna to South Bradenton (Florida) | 483.19 mi (777.62 km) |
| Gretna to South Burlington (Vermont) | 1,361.76 mi (2,191.54 km) |
| Gretna to South Charleston (West Virginia) | 752.11 mi (1,210.41 km) |
| Gretna to South Daytona (Florida) | 546.07 mi (878.81 km) |
| Gretna to South El Monte (California) | 1,660.21 mi (2,671.85 km) |
| Gretna to South Elgin (Illinois) | 840.27 mi (1,352.28 km) |
| Gretna to South Euclid (Ohio) | 933.05 mi (1,501.60 km) |
| Gretna to South Farmingdale (New York) | 1,193.89 mi (1,921.38 km) |
