| Leek to Seysses | 681.25 mi (1,096.37 km) |
| Leek to Sin-le-Noble | 290.17 mi (466.99 km) |
| Leek to Six-Fours-les-Plages | 779.32 mi (1,254.19 km) |
| Leek to Soissons | 345.89 mi (556.66 km) |
| Leek to Soisy-sous-Montmorency | 340.89 mi (548.62 km) |
| Leek to Sollies-Pont | 778.48 mi (1,252.85 km) |
| Leek to Somain | 295.88 mi (476.17 km) |
| Leek to Sorgues | 702.61 mi (1,130.74 km) |
| Leek to Sotteville-les-Rouen | 288.78 mi (464.75 km) |
| Leek to Soyaux | 525.49 mi (845.69 km) |
| Leek to Stains | 345.11 mi (555.41 km) |
| Leek to Stiring-Wendel | 472.15 mi (759.85 km) |
| Leek to Strasbourg | 527.82 mi (849.44 km) |
| Leek to Sucy-en-Brie | 359.04 mi (577.82 km) |
| Leek to Suresnes | 345.99 mi (556.81 km) |
