| Montlouis-sur-Loire to Somma Lombardo | 392.09 mi (631.01 km) |
| Montlouis-sur-Loire to Somma Vesuviana | 809.50 mi (1,302.77 km) |
| Montlouis-sur-Loire to Sommacampagna | 496.58 mi (799.16 km) |
| Montlouis-sur-Loire to Sona | 495.04 mi (796.70 km) |
| Montlouis-sur-Loire to Sondrio | 435.81 mi (701.37 km) |
| Montlouis-sur-Loire to Sora | 740.28 mi (1,191.37 km) |
| Montlouis-sur-Loire to Sorbolo | 492.73 mi (792.98 km) |
| Montlouis-sur-Loire to Soresina | 454.25 mi (731.04 km) |
| Montlouis-sur-Loire to Sorisole | 434.40 mi (699.09 km) |
| Montlouis-sur-Loire to Sorrento | 817.52 mi (1,315.68 km) |
| Montlouis-sur-Loire to Sorso | 595.39 mi (958.19 km) |
| Montlouis-sur-Loire to Sortino | 1,010.00 mi (1,625.44 km) |
| Montlouis-sur-Loire to Soverato Marina | 992.98 mi (1,598.04 km) |
| Montlouis-sur-Loire to Sovicille | 578.87 mi (931.60 km) |
| Montlouis-sur-Loire to Spello | 651.02 mi (1,047.72 km) |
