| Drogheda to Somma Lombardo | 868.98 mi (1,398.48 km) |
| Drogheda to Somma Vesuviana | 1,308.75 mi (2,106.24 km) |
| Drogheda to Sommacampagna | 957.38 mi (1,540.76 km) |
| Drogheda to Sona | 955.22 mi (1,537.28 km) |
| Drogheda to Sondrio | 886.64 mi (1,426.92 km) |
| Drogheda to Sora | 1,236.77 mi (1,990.39 km) |
| Drogheda to Sorbolo | 969.95 mi (1,560.99 km) |
| Drogheda to Soresina | 928.04 mi (1,493.53 km) |
| Drogheda to Sorisole | 899.37 mi (1,447.40 km) |
| Drogheda to Sorrento | 1,319.56 mi (2,123.63 km) |
| Drogheda to Sorso | 1,129.50 mi (1,817.75 km) |
| Drogheda to Sortino | 1,531.37 mi (2,464.51 km) |
| Drogheda to Soverato Marina | 1,496.84 mi (2,408.93 km) |
| Drogheda to Sovicille | 1,075.28 mi (1,730.49 km) |
| Drogheda to Spello | 1,139.16 mi (1,833.31 km) |
