| Gretna to Sesena | 4,746.17 mi (7,638.22 km) |
| Gretna to Sestao | 4,698.58 mi (7,561.64 km) |
| Gretna to Sevilla | 4,704.56 mi (7,571.26 km) |
| Gretna to Sevilla La Nueva | 4,723.74 mi (7,602.13 km) |
| Gretna to Silla | 4,927.07 mi (7,929.35 km) |
| Gretna to Silleda | 4,463.95 mi (7,184.03 km) |
| Gretna to Sitges | 4,980.77 mi (8,015.78 km) |
| Gretna to Socuellamos | 4,811.80 mi (7,743.84 km) |
| Gretna to Soller | 5,066.12 mi (8,153.13 km) |
| Gretna to Solsona | 4,945.71 mi (7,959.36 km) |
| Gretna to Son Servera | 5,102.13 mi (8,211.08 km) |
| Gretna to Sonseca | 4,744.13 mi (7,634.93 km) |
| Gretna to Sopelana | 4,698.08 mi (7,560.82 km) |
| Gretna to Soria | 4,763.11 mi (7,665.48 km) |
| Gretna to Suances | 4,646.52 mi (7,477.85 km) |
