| Mont-de-Marsan to Somma Lombardo | 467.55 mi (752.45 km) |
| Mont-de-Marsan to Somma Vesuviana | 789.09 mi (1,269.92 km) |
| Mont-de-Marsan to Sommacampagna | 567.11 mi (912.67 km) |
| Mont-de-Marsan to Sona | 566.57 mi (911.81 km) |
| Mont-de-Marsan to Sondrio | 529.85 mi (852.71 km) |
| Mont-de-Marsan to Sora | 730.23 mi (1,175.20 km) |
| Mont-de-Marsan to Sorbolo | 544.37 mi (876.08 km) |
| Mont-de-Marsan to Soresina | 518.30 mi (834.12 km) |
| Mont-de-Marsan to Sorisole | 513.52 mi (826.44 km) |
| Mont-de-Marsan to Sorrento | 792.01 mi (1,274.62 km) |
| Mont-de-Marsan to Sorso | 510.03 mi (820.81 km) |
| Mont-de-Marsan to Sortino | 936.53 mi (1,507.20 km) |
| Mont-de-Marsan to Soverato Marina | 953.25 mi (1,534.11 km) |
| Mont-de-Marsan to Sovicille | 588.21 mi (946.63 km) |
| Mont-de-Marsan to Spello | 663.05 mi (1,067.07 km) |
