| Ridge to Sestu | 4,161.96 mi (6,698.02 km) |
| Ridge to Settimo Torinese | 3,909.41 mi (6,291.59 km) |
| Ridge to Seveso | 3,952.80 mi (6,361.41 km) |
| Ridge to Sezze | 4,263.91 mi (6,862.10 km) |
| Ridge to Siano | 4,361.28 mi (7,018.81 km) |
| Ridge to Siena | 4,124.12 mi (6,637.14 km) |
| Ridge to Signa | 4,098.31 mi (6,595.60 km) |
| Ridge to Silea | 4,087.30 mi (6,577.87 km) |
| Ridge to Silvi Paese | 4,272.56 mi (6,876.02 km) |
| Ridge to Sinalunga | 4,145.18 mi (6,671.02 km) |
| Ridge to Siniscola | 4,145.23 mi (6,671.11 km) |
| Ridge to Sinnai | 4,166.98 mi (6,706.10 km) |
| Ridge to Siracusa | 4,528.69 mi (7,288.22 km) |
| Ridge to Solaro | 3,951.39 mi (6,359.15 km) |
| Ridge to Soliera | 4,058.94 mi (6,532.23 km) |
