| Key West to Seysses | 4,737.06 mi (7,623.56 km) |
| Key West to Sin-le-Noble | 4,710.27 mi (7,580.45 km) |
| Key West to Six-Fours-les-Plages | 4,962.76 mi (7,986.80 km) |
| Key West to Soissons | 4,734.53 mi (7,619.49 km) |
| Key West to Soisy-sous-Montmorency | 4,695.51 mi (7,556.70 km) |
| Key West to Sollies-Pont | 4,971.62 mi (8,001.04 km) |
| Key West to Somain | 4,717.55 mi (7,592.16 km) |
| Key West to Sorgues | 4,899.43 mi (7,884.87 km) |
| Key West to Sotteville-les-Rouen | 4,636.01 mi (7,460.94 km) |
| Key West to Soyaux | 4,649.62 mi (7,482.84 km) |
| Key West to Stains | 4,699.78 mi (7,563.57 km) |
| Key West to Stiring-Wendel | 4,895.00 mi (7,877.73 km) |
| Key West to Strasbourg | 4,942.46 mi (7,954.12 km) |
| Key West to Sucy-en-Brie | 4,708.72 mi (7,577.95 km) |
| Key West to Suresnes | 4,693.75 mi (7,553.87 km) |
