| Shannon to Somma Lombardo | 926.45 mi (1,490.98 km) |
| Shannon to Somma Vesuviana | 1,362.62 mi (2,192.93 km) |
| Shannon to Sommacampagna | 1,021.06 mi (1,643.24 km) |
| Shannon to Sona | 1,019.04 mi (1,639.99 km) |
| Shannon to Sondrio | 951.61 mi (1,531.48 km) |
| Shannon to Sora | 1,291.43 mi (2,078.35 km) |
| Shannon to Sorbolo | 1,029.02 mi (1,656.04 km) |
| Shannon to Soresina | 987.50 mi (1,589.23 km) |
| Shannon to Sorisole | 960.86 mi (1,546.35 km) |
| Shannon to Sorrento | 1,372.24 mi (2,208.40 km) |
| Shannon to Sorso | 1,160.23 mi (1,867.22 km) |
| Shannon to Sortino | 1,573.82 mi (2,532.82 km) |
| Shannon to Soverato Marina | 1,549.32 mi (2,493.39 km) |
| Shannon to Sovicille | 1,128.82 mi (1,816.66 km) |
| Shannon to Spello | 1,196.38 mi (1,925.39 km) |
