| Saint-Brieuc to Somma Lombardo | 572.94 mi (922.06 km) |
| Saint-Brieuc to Somma Vesuviana | 992.88 mi (1,597.88 km) |
| Saint-Brieuc to Sommacampagna | 676.07 mi (1,088.03 km) |
| Saint-Brieuc to Sona | 674.42 mi (1,085.37 km) |
| Saint-Brieuc to Sondrio | 612.54 mi (985.78 km) |
| Saint-Brieuc to Sora | 923.77 mi (1,486.67 km) |
| Saint-Brieuc to Sorbolo | 674.57 mi (1,085.62 km) |
| Saint-Brieuc to Soresina | 635.31 mi (1,022.44 km) |
| Saint-Brieuc to Sorisole | 613.82 mi (987.85 km) |
| Saint-Brieuc to Sorrento | 1,000.75 mi (1,610.55 km) |
| Saint-Brieuc to Sorso | 769.80 mi (1,238.88 km) |
| Saint-Brieuc to Sortino | 1,189.62 mi (1,914.51 km) |
| Saint-Brieuc to Soverato Marina | 1,175.86 mi (1,892.36 km) |
| Saint-Brieuc to Sovicille | 762.36 mi (1,226.90 km) |
| Saint-Brieuc to Spello | 834.35 mi (1,342.75 km) |
