| Houthulst to Somma Lombardo | 450.91 mi (725.68 km) |
| Houthulst to Somma Vesuviana | 887.94 mi (1,429.01 km) |
| Houthulst to Sommacampagna | 529.47 mi (852.10 km) |
| Houthulst to Sona | 527.19 mi (848.44 km) |
| Houthulst to Sondrio | 458.36 mi (737.66 km) |
| Houthulst to Sora | 815.76 mi (1,312.83 km) |
| Houthulst to Sorbolo | 547.22 mi (880.66 km) |
| Houthulst to Soresina | 505.59 mi (813.67 km) |
| Houthulst to Sorisole | 474.89 mi (764.27 km) |
| Houthulst to Sorrento | 900.12 mi (1,448.60 km) |
| Houthulst to Sorso | 753.07 mi (1,211.95 km) |
| Houthulst to Sortino | 1,123.88 mi (1,808.71 km) |
| Houthulst to Soverato Marina | 1,076.06 mi (1,731.75 km) |
| Houthulst to Sovicille | 658.10 mi (1,059.11 km) |
| Houthulst to Spello | 716.18 mi (1,152.58 km) |
