| Gretna to Solofra | 5,592.74 mi (9,000.65 km) |
| Gretna to Somma Lombardo | 5,158.14 mi (8,301.23 km) |
| Gretna to Somma Vesuviana | 5,572.97 mi (8,968.84 km) |
| Gretna to Sommacampagna | 5,259.18 mi (8,463.83 km) |
| Gretna to Sona | 5,257.36 mi (8,460.90 km) |
| Gretna to Sondrio | 5,192.37 mi (8,356.31 km) |
| Gretna to Sora | 5,506.23 mi (8,861.42 km) |
| Gretna to Sorbolo | 5,260.37 mi (8,465.74 km) |
| Gretna to Soresina | 5,220.51 mi (8,401.60 km) |
| Gretna to Sorisole | 5,197.29 mi (8,364.23 km) |
| Gretna to Sorrento | 5,579.05 mi (8,978.61 km) |
| Gretna to Sorso | 5,310.38 mi (8,546.24 km) |
| Gretna to Sortino | 5,736.29 mi (9,231.67 km) |
| Gretna to Soverato Marina | 5,748.85 mi (9,251.88 km) |
| Gretna to Sovicille | 5,346.82 mi (8,604.87 km) |
