| Ridge to Solofra | 4,367.04 mi (7,028.06 km) |
| Ridge to Somma Lombardo | 3,932.72 mi (6,329.10 km) |
| Ridge to Somma Vesuviana | 4,347.31 mi (6,996.32 km) |
| Ridge to Sommacampagna | 4,034.06 mi (6,492.20 km) |
| Ridge to Sona | 4,032.26 mi (6,489.30 km) |
| Ridge to Sondrio | 3,967.57 mi (6,385.18 km) |
| Ridge to Sora | 4,280.46 mi (6,888.74 km) |
| Ridge to Sorbolo | 4,034.85 mi (6,493.47 km) |
| Ridge to Soresina | 3,995.10 mi (6,429.49 km) |
| Ridge to Sorisole | 3,972.11 mi (6,392.49 km) |
| Ridge to Sorrento | 4,353.47 mi (7,006.24 km) |
| Ridge to Sorso | 4,086.66 mi (6,576.84 km) |
| Ridge to Sortino | 4,513.31 mi (7,263.47 km) |
| Ridge to Soverato Marina | 4,523.70 mi (7,280.20 km) |
| Ridge to Sovicille | 4,121.01 mi (6,632.13 km) |
