| Smolyan to Sin-le-Noble | 1,194.60 mi (1,922.52 km) |
| Smolyan to Six-Fours-les-Plages | 967.80 mi (1,557.52 km) |
| Smolyan to Soissons | 1,161.69 mi (1,869.56 km) |
| Smolyan to Soisy-sous-Montmorency | 1,197.14 mi (1,926.61 km) |
| Smolyan to Sollies-Pont | 956.65 mi (1,539.59 km) |
| Smolyan to Somain | 1,187.63 mi (1,911.31 km) |
| Smolyan to Sorgues | 1,016.55 mi (1,635.97 km) |
| Smolyan to Sotteville-les-Rouen | 1,257.81 mi (2,024.25 km) |
| Smolyan to Soyaux | 1,252.08 mi (2,015.03 km) |
| Smolyan to Stains | 1,192.75 mi (1,919.55 km) |
| Smolyan to Stiring-Wendel | 1,006.45 mi (1,619.73 km) |
| Smolyan to Strasbourg | 955.04 mi (1,537.00 km) |
| Smolyan to Sucy-en-Brie | 1,183.11 mi (1,904.02 km) |
| Smolyan to Suresnes | 1,198.28 mi (1,928.44 km) |
| Smolyan to Talant | 1,045.77 mi (1,683.00 km) |
