| Gretna to Sestu | 5,383.92 mi (8,664.58 km) |
| Gretna to Settimo Torinese | 5,135.16 mi (8,264.24 km) |
| Gretna to Seveso | 5,178.16 mi (8,333.44 km) |
| Gretna to Sezze | 5,489.57 mi (8,834.62 km) |
| Gretna to Siano | 5,586.96 mi (8,991.35 km) |
| Gretna to Siena | 5,349.93 mi (8,609.87 km) |
| Gretna to Signa | 5,324.08 mi (8,568.27 km) |
| Gretna to Silea | 5,311.74 mi (8,548.42 km) |
| Gretna to Silvi Paese | 5,498.31 mi (8,848.68 km) |
| Gretna to Sinalunga | 5,370.97 mi (8,643.75 km) |
| Gretna to Siniscola | 5,369.25 mi (8,640.97 km) |
| Gretna to Sinnai | 5,389.02 mi (8,672.78 km) |
| Gretna to Siracusa | 5,751.72 mi (9,256.50 km) |
| Gretna to Solaro | 5,176.77 mi (8,331.21 km) |
| Gretna to Soliera | 5,284.42 mi (8,504.45 km) |
